Values:
STATE_UNSPECIFIED (0):
Default first value for Enums.
CLUSTER_PENDING (1):
Waiting for cluster state to be RUNNING.
PROVISIONING (2):
The BackupPlan is in the process of being
created.
READY (3):
The BackupPlan has successfully been created
and is ready for Backups.
FAILED (4):
BackupPlan creation has failed.
DEACTIVATED (5):
The BackupPlan has been deactivated.
DELETING (6):
The BackupPlan is in the process of being
deleted.
