Add a prefix option to e2e for use with resources

hack/ginkgo-e2e.sh

@@ -105,5 +105,6 @@ export PATH=$(dirname "${e2e_test}"):"${PATH}"
   --repo-root="${KUBE_VERSION_ROOT}" \
   --node-instance-group="${NODE_INSTANCE_GROUP:-}" \
   --num-nodes="${NUM_MINIONS:-}" \
+  --prefix="${KUBE_GCE_INSTANCE_PREFIX:-e2e}" \
   ${E2E_REPORT_DIR+"--report-dir=${E2E_REPORT_DIR}"} \
   "${@:-}"

test/e2e/e2e_test.go

@@ -101,6 +101,7 @@ func init() {
 	flag.StringVar(&testContext.Provider, "provider", "", "The name of the Kubernetes provider (gce, gke, local, vagrant, etc.)")
 	flag.StringVar(&testContext.KubectlPath, "kubectl-path", "kubectl", "The kubectl binary to use. For development, you might use 'cluster/kubectl.sh' here.")
 	flag.StringVar(&testContext.OutputDir, "e2e-output-dir", "/tmp", "Output directory for interesting/useful test data, like performance data, benchmarks, and other metrics.")
+	flag.StringVar(&testContext.prefix, "prefix", "e2e", "A prefix to be added to cloud resources created during testing.")
 
 	// TODO: Flags per provider?  Rename gce-project/gce-zone?
 	flag.StringVar(&cloudConfig.MasterName, "kube-master", "", "Name of the kubernetes master. Only required if provider is gce or gke")

test/e2e/pd.go

@@ -189,7 +189,7 @@ var _ = Describe("Pod Disks", func() {
 
 func createPD() (string, error) {
 	if testContext.Provider == "gce" {
-		pdName := fmt.Sprintf("e2e-%s", string(util.NewUUID()))
+		pdName := fmt.Sprintf("%s-%s", testContext.prefix, string(util.NewUUID()))
 
 		zone := testContext.CloudConfig.Zone
 		// TODO: make this hit the compute API directly instread of shelling out to gcloud.

test/e2e/util.go

@@ -93,6 +93,7 @@ type TestContextType struct {
 	CloudConfig CloudConfig
 	KubectlPath string
 	OutputDir   string
+	prefix      string
 }
 
 var testContext TestContextType