Make the first line of every file consistent.

Change-Id: I2e1a809cfca8e88693551d58d33e747f54ee5eb1
Correct update to zero numbers of health monitors

If property 'monitors' is in prop_diff and equals to None ot [],
we should not skip dissociating step for monitors.

Change-Id: I313a8e09dbeeab78126ff889316f0ecb1a9a8c84
Closes-Bug: #1301406
Merge "Correct update to zero numbers of health monitors"
Merge "Make the first line of every file consistent."