Fix for resetting snapshot status

Reset snapshot status API is a snapshot action and its return code is
202, which means it is not a sync procedure. Although the API is mainly
a DB operation and the snapshot status will be changed quickly, it is
not stable to verify the snapshot status immediately after calling the
API. It is more suitable to use 'waiters' function to wait for the
snapshot status to be changed.

Change-Id: I6e954e60b5318dd1271afcbf124a7b03584dc84a
1 file changed