Support auth urls which could be set separately

In Load-balanced auth urls, it would not just be openstack ip.
So, the user can export their openrc/openstackrc before running the test

Change-Id: Ic7e30187626e3b8fedada431c2cef9e5f365ebfb
Update references of auth_url to use OS_AUTH_URL

Change-Id: Icdc48a361a52e935389fed0db5c13e095fb03b03
Merge remote-tracking branch 'upstream/test_parallelism' into test_parallelism
Move sample test init files

Change-Id: I9591f9cc6a347e907053084be3c2c9e07092e587
Resolve the conflict, had missed it in my earlier commit

Change-Id: I4a83db2e5e8ff7f5172618c842a1ac9467d7d20e
Merge pull request #70 from vedujoshi/test_parallelism

Support auth urls which could be set separately