we have noticed that sometimes on ubuntu 14.04, 'service redis-server start' is
not starting the redis service, so added a check and a restart in such cases

Closes-Bug: #1402466

Conflicts:

	fabfile/tasks/provision.py

Change-Id: I6c0065704ddb1547b9fc383ef6de7d749ab9e448
Merge "we have noticed that sometimes on ubuntu 14.04, 'service redis-server start' is not starting the redis service, so added a check and a restart in such cases"