Addtional tests for HA mode

Tests descirption:
* Verify pacemaker configuration
* Test restoring haproxy
* Test restoring mysql
* Test restoring VIPs (management, public)
* Verify pacemaker status if controller was turned off
* Verify pacemaker status if controller was disconnected

Change-Id: I2c0f2a77e50342301d3d010ea6825a6d464aa87c
Merge "Addtional tests for HA mode"