Re-try opening ssh tunnel if it fails the first time(s)

Change-Id: I653db3a818435c023f0bbd8015d2bd1a35ed4e34
Merge changes from origin/7.1

6249518 Re-try opening ssh tunnel if it fails the first time(s)

Change-Id: I01402d5ae3a97aa2aca72f5c23dc7b6315b0edf6