rebase: update kubernetes to v1.20.0

updated kubernetes packages to latest
release.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

vendor/k8s.io/apimachinery/pkg/runtime/negotiate.go

@@ -92,39 +92,6 @@ func NewClientNegotiator(serializer NegotiatedSerializer, gv schema.GroupVersion
 	}
 }
 
-// NewInternalClientNegotiator applies the default client rules for connecting to a Kubernetes apiserver
-// where objects are converted to gv prior to sending and decoded to their internal representation prior
-// to retrieval.
-//
-// DEPRECATED: Internal clients are deprecated and will be removed in a future Kubernetes release.
-func NewInternalClientNegotiator(serializer NegotiatedSerializer, gv schema.GroupVersion) ClientNegotiator {
-	decode := schema.GroupVersions{
-		{
-			Group:   gv.Group,
-			Version: APIVersionInternal,
-		},
-		// always include the legacy group as a decoding target to handle non-error `Status` return types
-		{
-			Group:   "",
-			Version: APIVersionInternal,
-		},
-	}
-	return &clientNegotiator{
-		encode:     gv,
-		decode:     decode,
-		serializer: serializer,
-	}
-}
-
-// NewSimpleClientNegotiator will negotiate for a single serializer. This should only be used
-// for testing or when the caller is taking responsibility for setting the GVK on encoded objects.
-func NewSimpleClientNegotiator(info SerializerInfo, gv schema.GroupVersion) ClientNegotiator {
-	return &clientNegotiator{
-		serializer: &simpleNegotiatedSerializer{info: info},
-		encode:     gv,
-	}
-}
-
 type simpleNegotiatedSerializer struct {
 	info SerializerInfo
 }