Return new default GRPC client instantiation to every request (kubernetes-sigs#3130)

Author: ciarams87

conformance/utils/grpc/grpc.go

@@ -270,6 +270,9 @@ func validateExpectedResponse(t *testing.T, expected ExpectedResponse) {
 func MakeRequestAndExpectEventuallyConsistentResponse(t *testing.T, c Client, timeoutConfig config.TimeoutConfig, gwAddr string, expected ExpectedResponse) {
 	t.Helper()
 	validateExpectedResponse(t, expected)
+	if c == nil {
+		c = &DefaultClient{Conn: nil}
+	}
 	defer c.Close()
 	sendRPC := func(elapsed time.Duration) bool {
 		resp, err := c.SendRPC(t, gwAddr, expected, timeoutConfig.MaxTimeToConsistency-elapsed)

conformance/utils/suite/suite.go

@@ -193,9 +193,6 @@ func NewConformanceTestSuite(options ConformanceOptions) (*ConformanceTestSuite,
 	}
 
 	grpcClient := options.GRPCClient
-	if grpcClient == nil {
-		grpcClient = &grpc.DefaultClient{Conn: nil}
-	}
 
 	installedCRDs := &apiextensionsv1.CustomResourceDefinitionList{}
 	err := options.Client.List(context.TODO(), installedCRDs)