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

Change-Id: I6c0065704ddb1547b9fc383ef6de7d749ab9e448
Closes-Bug: #1402466
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" into R2.0