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/client-go/tools/pager/pager.go

@@ -73,16 +73,18 @@ func New(fn ListPageFunc) *ListPager {
 // List returns a single list object, but attempts to retrieve smaller chunks from the
 // server to reduce the impact on the server. If the chunk attempt fails, it will load
 // the full list instead. The Limit field on options, if unset, will default to the page size.
-func (p *ListPager) List(ctx context.Context, options metav1.ListOptions) (runtime.Object, error) {
+func (p *ListPager) List(ctx context.Context, options metav1.ListOptions) (runtime.Object, bool, error) {
 	if options.Limit == 0 {
 		options.Limit = p.PageSize
 	}
 	requestedResourceVersion := options.ResourceVersion
 	var list *metainternalversion.List
+	paginatedResult := false
+
 	for {
 		select {
 		case <-ctx.Done():
-			return nil, ctx.Err()
+			return nil, paginatedResult, ctx.Err()
 		default:
 		}
 
@@ -93,23 +95,24 @@ func (p *ListPager) List(ctx context.Context, options metav1.ListOptions) (runti
 			// failing when the resource versions is established by the first page request falls out of the compaction
 			// during the subsequent list requests).
 			if !errors.IsResourceExpired(err) || !p.FullListIfExpired || options.Continue == "" {
-				return nil, err
+				return nil, paginatedResult, err
 			}
 			// the list expired while we were processing, fall back to a full list at
 			// the requested ResourceVersion.
 			options.Limit = 0
 			options.Continue = ""
 			options.ResourceVersion = requestedResourceVersion
-			return p.PageFn(ctx, options)
+			result, err := p.PageFn(ctx, options)
+			return result, paginatedResult, err
 		}
 		m, err := meta.ListAccessor(obj)
 		if err != nil {
-			return nil, fmt.Errorf("returned object must be a list: %v", err)
+			return nil, paginatedResult, fmt.Errorf("returned object must be a list: %v", err)
 		}
 
 		// exit early and return the object we got if we haven't processed any pages
 		if len(m.GetContinue()) == 0 && list == nil {
-			return obj, nil
+			return obj, paginatedResult, nil
 		}
 
 		// initialize the list and fill its contents
@@ -122,12 +125,12 @@ func (p *ListPager) List(ctx context.Context, options metav1.ListOptions) (runti
 			list.Items = append(list.Items, obj)
 			return nil
 		}); err != nil {
-			return nil, err
+			return nil, paginatedResult, err
 		}
 
 		// if we have no more items, return the list
 		if len(m.GetContinue()) == 0 {
-			return list, nil
+			return list, paginatedResult, nil
 		}
 
 		// set the next loop up
@@ -136,6 +139,8 @@ func (p *ListPager) List(ctx context.Context, options metav1.ListOptions) (runti
 		// `specifying resource version is not allowed when using continue` error.
 		// See https://github.com/kubernetes/kubernetes/issues/85221#issuecomment-553748143.
 		options.ResourceVersion = ""
+		// At this point, result is already paginated.
+		paginatedResult = true
 	}
 }