porting of ha scripts to test parallel infrastructure
updating inspect handles for node failures scenarios
Removing the unused code added for ha tests in vm_test.py

Change-Id: Ifabfa463b44d2e7ba9f73826366f7b55ed785baa
Merge "porting of ha scripts to test parallel infrastructure updating inspect handles for node failures scenarios Removing the unused code added for ha tests in vm_test.py"