Upgrade, increased timeout for health checker

Sometimes during the testing some of the
after upgrade checkers fails. Increased
timeout to 15 minutes.

Change-Id: I5af19ed50ec9c82940eebcdfe970d51a56f64d55
Closes-bug: #1342723
(cherry picked from commit c2cb9fe7b711b49f143c351495e5bf15e895922a)