The Code enum represents the various reasons a state can be
INACTIVE.
Values:
CODE_UNSPECIFIED (0):
No information available.
PENDING_REVIEW (1):
The proposed spoke is pending review.
REJECTED (2):
The proposed spoke has been rejected by the
hub administrator.
PAUSED (3):
The spoke has been deactivated internally.
FAILED (4):
Network Connectivity Center encountered
errors while accepting the spoke.