Bumping k8s dependencies to 1.13

vendor/github.com/googleapis/gnostic/plugins/plugin.proto

@@ -22,10 +22,7 @@
 
 syntax = "proto3";
 
-import "github.com/googleapis/gnostic/OpenAPIv2/OpenAPIv2.proto";
-import "github.com/googleapis/gnostic/OpenAPIv3/OpenAPIv3.proto";
-import "github.com/googleapis/gnostic/discovery/discovery.proto";
-import "github.com/googleapis/gnostic/surface/surface.proto";
+import "google/protobuf/any.proto";
 
 package gnostic.plugin.v1;
 
@@ -85,17 +82,36 @@ message Request {
   // The version number of gnostic.
   Version compiler_version = 4;
   
-  // OpenAPI v2 API representation
-  openapi.v2.Document openapi2 = 5;
+  // API models
+  repeated google.protobuf.Any models = 5;
+}
 
-  // OpenAPI v3 API representation
-  openapi.v3.Document openapi3 = 6;
+// Plugins can return messages to be collated and reported by gnostic.
+message Message {
 
-  // Discovery API representation
-  discovery.v1.Document discovery = 7;
-  
-  // generated code surface representation
-  surface.v1.Model surface = 8;
+   enum Level {
+       UNKNOWN = 0;
+       INFO = 1;
+       WARNING = 2;
+       ERROR = 3;
+       FATAL = 4;
+   }
+
+   // message severity
+   Level level = 1;
+
+   // a unique message identifier
+   string code = 2;
+
+   // message text
+   string text = 3;
+
+   // an associated key path in an API description
+   repeated string keys = 4;
+}
+
+message Messages {
+   repeated Message messages = 1;
 }
 
 // The plugin writes an encoded Response to stdout.
@@ -106,14 +122,17 @@ message Response {
   // even if it reports an error in this way.
   //
   // This should be used to indicate errors which prevent the plugin from 
-  // operating as intended.  Errors which indicate a problem in openapic 
+  // operating as intended.  Errors which indicate a problem in gnostic 
   // itself -- such as the input Document being unparseable -- should be 
   // reported by writing a message to stderr and exiting with a non-zero 
   // status code.
   repeated string errors = 1;
   
-  // file output, each file will be written by openapic to an appropriate location.
+  // file output, each file will be written by gnostic to an appropriate location.
   repeated File files = 2;
+
+  // informational messages to be collected and reported by gnostic.
+  repeated Message messages = 3;
 }
 
 // File describes a file generated by a plugin.