Description of problem:
Could not provision gcp volume if delete gcp-pd-cloud-credentials

Version-Release number of selected component (if applicable):
4.7.0-0.nightly-2020-12-20-031835

How reproducible:
Always

Steps to Reproduce:
1.Delete secret gcp-pd-cloud-credentials in namespace openshift-cluster-csi-drivers
2.New gcp-pd-cloud-credentials is created
3.Create pvc/pod
oc describe pvc
Name:          pvc1
Namespace:     test
StorageClass:  standard-csi
Status:        Pending
Volume:        
Labels:        <none>
Annotations:   volume.beta.kubernetes.io/storage-provisioner: pd.csi.storage.gke.io
               volume.kubernetes.io/selected-node: qe-chaoyang-1221-nnmhj-worker-a-866lh.c.openshift-qe.internal
Finalizers:    [kubernetes.io/pvc-protection]
Capacity:      
Access Modes:  
VolumeMode:    Filesystem
Mounted By:    pod1
Events:
  Type     Reason                Age                   From                                                                                                                Message
  ----     ------                ----                  ----                                                                                                                -------
  Normal   WaitForFirstConsumer  98s (x21 over 6m13s)  persistentvolume-controller                                                                                         waiting for first consumer to be created before binding
  Normal   ExternalProvisioning  53s (x5 over 86s)     persistentvolume-controller                                                                                         waiting for a volume to be created, either by external provisioner "pd.csi.storage.gke.io" or manually created by system administrator
  Normal   Provisioning          23s (x7 over 86s)     pd.csi.storage.gke.io_qe-chaoyang-1221-nnmhj-master-1.c.openshift-qe.internal_c201ee25-3746-46aa-805c-4f3d5a9002b7  External provisioner is provisioning volume for claim "test/pvc1"
  Warning  ProvisioningFailed    23s (x7 over 86s)     pd.csi.storage.gke.io_qe-chaoyang-1221-nnmhj-master-1.c.openshift-qe.internal_c201ee25-3746-46aa-805c-4f3d5a9002b7  failed to provision volume with StorageClass "standard-csi": rpc error: code = Internal desc = CreateVolume unknown get disk error when validating: Get "https://compute.googleapis.com/compute/v1/projects/openshift-qe/zones/us-central1-a/disks/pvc-4af50427-1ed5-4c3a-a2e3-1bd073de3415?alt=json&prettyPrint=false": oauth2: cannot fetch token: 400 Bad Request
Response: {"error":"invalid_grant","error_description":"Invalid JWT Signature."}
Actual results:


Expected results:
PV should be provisioned by gcp csi driver.

Master Log:

Node Log (of failed PODs):

PV Dump:

PVC Dump:

StorageClass Dump (if StorageClass used by PV/PVC):

Additional info: