4.1.1 Skip ha tests if only 1 controller is online

Add verification that len of controllers is more than 1
If we have 1 controller tests skipped to run

Change-Id: I24f21e1f7afdc12c0bbf84ca9b6cf917512bcb1d
Closes-Bug: #1294134
Merge "4.1.1 Skip ha tests if only 1 controller is online" into stable/4.1