Since latest ansible handlers are not triggered inside the same
handlers flush, which means that triggering mysql restart
the way we did does not work anymore. So instead of
notifying inside handlers, we add listen key to tasks
that are triggered by these newly produced notifications.
This could be due to the bug [1], but ansible-core version that has
backport included still shows inconsistent behaviour
[1] https://github.com/ansible/ansible/issues/80880
Change-Id: If188ef9ef978332dc94b282893140de572bac6f3
52353e3771