update kube and vendor dependencies

With kubernetes 1.18 release of client-go, signatures on methods in
generated clientsets, dynamic, metadata, and scale clients have been
modified to accept context.Context as a first argument.
Signatures of Create, Update, and Patch methods have been updated
to accept CreateOptions, UpdateOptions and PatchOptions respectively.
Signatures of Delete and DeleteCollection methods now accept
DeleteOptions by value instead of by reference.
These changes are now accommodated with this PR and client-go
and dependencies are updated to v1.18.0

Signed-off-by: Humble Chirammal <hchiramm@redhat.com>

vendor/k8s.io/api/networking/v1beta1/generated.proto

@@ -30,19 +30,33 @@ import "k8s.io/apimachinery/pkg/util/intstr/generated.proto";
 // Package-wide variables from generator "generated".
 option go_package = "v1beta1";
 
-// HTTPIngressPath associates a path regex with a backend. Incoming urls matching
-// the path are forwarded to the backend.
+// HTTPIngressPath associates a path with a backend. Incoming urls matching the
+// path are forwarded to the backend.
 message HTTPIngressPath {
-  // Path is an extended POSIX regex as defined by IEEE Std 1003.1,
-  // (i.e this follows the egrep/unix syntax, not the perl syntax)
-  // matched against the path of an incoming request. Currently it can
-  // contain characters disallowed from the conventional "path"
-  // part of a URL as defined by RFC 3986. Paths must begin with
-  // a '/'. If unspecified, the path defaults to a catch all sending
-  // traffic to the backend.
+  // Path is matched against the path of an incoming request. Currently it can
+  // contain characters disallowed from the conventional "path" part of a URL
+  // as defined by RFC 3986. Paths must begin with a '/'. When unspecified,
+  // all paths from incoming requests are matched.
   // +optional
   optional string path = 1;
 
+  // PathType determines the interpretation of the Path matching. PathType can
+  // be one of the following values:
+  // * Exact: Matches the URL path exactly.
+  // * Prefix: Matches based on a URL path prefix split by '/'. Matching is
+  //   done on a path element by element basis. A path element refers is the
+  //   list of labels in the path split by the '/' separator. A request is a
+  //   match for path p if every p is an element-wise prefix of p of the
+  //   request path. Note that if the last element of the path is a substring
+  //   of the last element in request path, it is not a match (e.g. /foo/bar
+  //   matches /foo/bar/baz, but does not match /foo/barbaz).
+  // * ImplementationSpecific: Interpretation of the Path matching is up to
+  //   the IngressClass. Implementations can treat this as a separate PathType
+  //   or treat it identically to Prefix or Exact path types.
+  // Implementations are required to support all path types.
+  // Defaults to ImplementationSpecific.
+  optional string pathType = 3;
+
   // Backend defines the referenced service endpoint to which the traffic
   // will be forwarded to.
   optional IngressBackend backend = 2;
@@ -82,10 +96,63 @@ message Ingress {
 // IngressBackend describes all endpoints for a given service and port.
 message IngressBackend {
   // Specifies the name of the referenced service.
+  // +optional
   optional string serviceName = 1;
 
   // Specifies the port of the referenced service.
+  // +optional
   optional k8s.io.apimachinery.pkg.util.intstr.IntOrString servicePort = 2;
+
+  // Resource is an ObjectRef to another Kubernetes resource in the namespace
+  // of the Ingress object. If resource is specified, serviceName and servicePort
+  // must not be specified.
+  // +optional
+  optional k8s.io.api.core.v1.TypedLocalObjectReference resource = 3;
+}
+
+// IngressClass represents the class of the Ingress, referenced by the Ingress
+// Spec. The `ingressclass.kubernetes.io/is-default-class` annotation can be
+// used to indicate that an IngressClass should be considered default. When a
+// single IngressClass resource has this annotation set to true, new Ingress
+// resources without a class specified will be assigned this default class.
+message IngressClass {
+  // Standard object's metadata.
+  // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata
+  // +optional
+  optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;
+
+  // Spec is the desired state of the IngressClass.
+  // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status
+  // +optional
+  optional IngressClassSpec spec = 2;
+}
+
+// IngressClassList is a collection of IngressClasses.
+message IngressClassList {
+  // Standard list metadata.
+  // +optional
+  optional k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;
+
+  // Items is the list of IngressClasses.
+  // +listType=set
+  repeated IngressClass items = 2;
+}
+
+// IngressClassSpec provides information about the class of an Ingress.
+message IngressClassSpec {
+  // Controller refers to the name of the controller that should handle this
+  // class. This allows for different "flavors" that are controlled by the
+  // same controller. For example, you may have different Parameters for the
+  // same implementing controller. This should be specified as a
+  // domain-prefixed path no more than 250 characters in length, e.g.
+  // "acme.io/ingress-controller". This field is immutable.
+  optional string controller = 1;
+
+  // Parameters is a link to a custom resource containing additional
+  // configuration for the controller. This is optional if the controller does
+  // not require extra parameters.
+  // +optional
+  optional k8s.io.api.core.v1.TypedLocalObjectReference parameters = 2;
 }
 
 // IngressList is a collection of Ingress.
@@ -103,18 +170,28 @@ message IngressList {
 // the related backend services. Incoming requests are first evaluated for a host
 // match, then routed to the backend associated with the matching IngressRuleValue.
 message IngressRule {
-  // Host is the fully qualified domain name of a network host, as defined
-  // by RFC 3986. Note the following deviations from the "host" part of the
-  // URI as defined in the RFC:
-  // 1. IPs are not allowed. Currently an IngressRuleValue can only apply to the
-  // 	  IP in the Spec of the parent Ingress.
+  // Host is the fully qualified domain name of a network host, as defined by RFC 3986.
+  // Note the following deviations from the "host" part of the
+  // URI as defined in RFC 3986:
+  // 1. IPs are not allowed. Currently an IngressRuleValue can only apply to
+  //    the IP in the Spec of the parent Ingress.
   // 2. The `:` delimiter is not respected because ports are not allowed.
   // 	  Currently the port of an Ingress is implicitly :80 for http and
   // 	  :443 for https.
   // Both these may change in the future.
-  // Incoming requests are matched against the host before the IngressRuleValue.
-  // If the host is unspecified, the Ingress routes all traffic based on the
-  // specified IngressRuleValue.
+  // Incoming requests are matched against the host before the
+  // IngressRuleValue. If the host is unspecified, the Ingress routes all
+  // traffic based on the specified IngressRuleValue.
+  //
+  // Host can be "precise" which is a domain name without the terminating dot of
+  // a network host (e.g. "foo.bar.com") or "wildcard", which is a domain name
+  // prefixed with a single wildcard label (e.g. "*.foo.com").
+  // The wildcard character '*' must appear by itself as the first DNS label and
+  // matches only a single label. You cannot have a wildcard label by itself (e.g. Host == "*").
+  // Requests will be matched against the Host field in the following way:
+  // 1. If Host is precise, the request matches this rule if the http host header is equal to Host.
+  // 2. If Host is a wildcard, then the request matches this rule if the http host header
+  // is to equal to the suffix (removing the first label) of the wildcard rule.
   // +optional
   optional string host = 1;
 
@@ -138,6 +215,19 @@ message IngressRuleValue {
 
 // IngressSpec describes the Ingress the user wishes to exist.
 message IngressSpec {
+  // IngressClassName is the name of the IngressClass cluster resource. The
+  // associated IngressClass defines which controller will implement the
+  // resource. This replaces the deprecated `kubernetes.io/ingress.class`
+  // annotation. For backwards compatibility, when that annotation is set, it
+  // must be given precedence over this field. The controller may emit a
+  // warning if the field and annotation have different values.
+  // Implementations of this API should ignore Ingresses without a class
+  // specified. An IngressClass resource may be marked as default, which can
+  // be used to set a default value for this field. For more information,
+  // refer to the IngressClass documentation.
+  // +optional
+  optional string ingressClassName = 4;
+
   // A default backend capable of servicing requests that don't match any
   // rule. At least one of 'backend' or 'rules' must be specified. This field
   // is optional to allow the loadbalancer controller or defaulting logic to
@@ -175,11 +265,11 @@ message IngressTLS {
   // +optional
   repeated string hosts = 1;
 
-  // SecretName is the name of the secret used to terminate SSL traffic on 443.
-  // Field is left optional to allow SSL routing based on SNI hostname alone.
-  // If the SNI host in a listener conflicts with the "Host" header field used
-  // by an IngressRule, the SNI host is used for termination and value of the
-  // Host header is used for routing.
+  // SecretName is the name of the secret used to terminate TLS traffic on
+  // port 443. Field is left optional to allow TLS routing based on SNI
+  // hostname alone. If the SNI host in a listener conflicts with the "Host"
+  // header field used by an IngressRule, the SNI host is used for termination
+  // and value of the Host header is used for routing.
   // +optional
   optional string secretName = 2;
 }