Fixed restore to wait for full mysqld shutdown before attempting restart

Fixed the issues where after resetting the root password, the
innobackupex strategy was not waiting for the mysqld process to shut
down completely before attempting to restart it.

Fixes bug 1190735

Change-Id: I31524451a44b6e8728eb4ec4285643b69ce13d0e
Merge "Fixed restore to wait for full mysqld shutdown before attempting restart"