Pipe in GCE master/node tags through flags for e2e test

hack/ginkgo-e2e.sh

@@ -150,6 +150,8 @@ export PATH=$(dirname "${e2e_test}"):"${PATH}"
   --node-instance-group="${NODE_INSTANCE_GROUP:-}" \
   --prefix="${KUBE_GCE_INSTANCE_PREFIX:-e2e}" \
   --network="${KUBE_GCE_NETWORK:-${KUBE_GKE_NETWORK:-e2e}}" \
+  --node-tag="${NODE_TAG:-}" \
+  --master-tag="${MASTER_TAG:-}" \
   --federated-kube-context="${FEDERATION_KUBE_CONTEXT:-e2e-federation}" \
   ${KUBE_CONTAINER_RUNTIME:+"--container-runtime=${KUBE_CONTAINER_RUNTIME}"} \
   ${MASTER_OS_DISTRIBUTION:+"--master-os-distro=${MASTER_OS_DISTRIBUTION}"} \

hack/verify-flags/known-flags.txt

@@ -452,6 +452,7 @@ manifest-url-header
 masquerade-all
 master-os-distro
 master-service-namespace
+master-tag
 max-concurrency
 max-connection-bytes-per-sec
 maximum-dead-containers
@@ -512,6 +513,7 @@ node-schedulable-timeout
 node-startup-grace-period
 node-status-update-frequency
 node-sync-period
+node-tag
 no-headers
 no-headers
 non-masquerade-cidr

test/e2e/framework/test_context.go

@@ -143,6 +143,8 @@ type CloudConfig struct {
 	ClusterTag        string
 	Network           string
 	ConfigFile        string // for azure and openstack
+	NodeTag           string
+	MasterTag         string
 
 	Provider cloudprovider.Interface
 }
@@ -210,6 +212,8 @@ func RegisterClusterFlags() {
 	flag.StringVar(&cloudConfig.NodeInstanceGroup, "node-instance-group", "", "Name of the managed instance group for nodes. Valid only for gce, gke or aws. If there is more than one group: comma separated list of groups.")
 	flag.StringVar(&cloudConfig.Network, "network", "e2e", "The cloud provider network for this e2e cluster.")
 	flag.IntVar(&cloudConfig.NumNodes, "num-nodes", -1, "Number of nodes in the cluster")
+	flag.StringVar(&cloudConfig.NodeTag, "node-tag", "", "Network tags used on node instances. Valid only for gce, gke")
+	flag.StringVar(&cloudConfig.MasterTag, "master-tag", "", "Network tags used on master instances. Valid only for gce, gke")
 
 	flag.StringVar(&cloudConfig.ClusterTag, "cluster-tag", "", "Tag used to identify resources.  Only required if provider is aws.")
 	flag.StringVar(&cloudConfig.ConfigFile, "cloud-config-file", "", "Cloud config file.  Only required if provider is azure.")