Merge pull request #802 from mattcary/image-1.3

stage v1.3.0-rc1

Author: k8s-ci-robot

deploy/kubernetes/images/prow-gke-release-staging-rc-master/image.yaml

@@ -32,7 +32,7 @@ metadata:
 imageTag:
   name: gke.gcr.io/gcp-compute-persistent-disk-csi-driver
   newName: gcr.io/gke-release-staging/gcp-compute-persistent-disk-csi-driver
-  newTag: "v1.2.1-rc1"
+  newTag: "v1.3.0-rc1"
 ---
 
 apiVersion: builtin