Shorten the GKE cluster name

Some intree tests create disks with names which is a combination of
cluster name + UUID, and exceeds the 63 chars limit of disk resources

Author: saikat-royc

test/k8s-integration/main.go

@@ -47,7 +47,7 @@ var (
 	numNodes           = flag.Int("num-nodes", -1, "the number of nodes in the test cluster")
 	imageType          = flag.String("image-type", "cos", "the image type to use for the cluster")
 	gkeReleaseChannel  = flag.String("gke-release-channel", "", "GKE release channel to be used for cluster deploy. One of 'rapid', 'stable' or 'regular'")
-	gkeTestClusterName = flag.String("gke-cluster-name", "gcp-pd-csi-driver-test-cluster", "GKE cluster name")
+	gkeTestClusterName = flag.String("gke-cluster-name", "gcp-pd-csi-cluster", "GKE cluster name")
 	gkeNodeVersion     = flag.String("gke-node-version", "", "GKE cluster worker node version")
 	isRegionalCluster  = flag.Bool("is-regional-cluster", false, "tell the test that a regional cluster is being used. Should be used for running on an existing regional cluster (ie, --bringup-cluster=false). The test will fail if a zonal GKE cluster is created when this flag is true")