Values:
STATE_UNSPECIFIED (0):
No description available.
CREATING (1):
The private connection is in creation state -
creating resources.
CREATED (2):
The private connection has been created with
all of its resources.
FAILED (3):
The private connection creation has failed.
DELETING (4):
The private connection is being deleted.
FAILED_TO_DELETE (5):
Delete request has failed, resource is in
invalid state.
DELETED (6):
The private connection has been deleted.