Code review comment for lp:~tr3buchet/nova/lock

Overall lgtm. A few small comments:

> + if(admin or not locked):

No parens needed :-)

> + @checks_lock

I'm wondering if we should give this particular lock a memorable/unambiguous name-- there will be various kinds of locks, mutexs, etc throughout the system, so down the road, check_lock might not be as clear as it is today.

Maybe, @check_instance_lock, or @check_state_lock. Just a thought.