Values:
LOCK_STATE_UNSPECIFIED (0):
The default value. This value is used if the
lock state is omitted.
LOCKED (1):
The deployment is locked.
UNLOCKED (2):
The deployment is unlocked.
LOCKING (3):
The deployment is being locked.
UNLOCKING (4):
The deployment is being unlocked.
LOCK_FAILED (5):
The deployment has failed to lock.
UNLOCK_FAILED (6):
The deployment has failed to unlock.
