Add a test and additional validations and fix bugs

Add test test_ports_device_owner_and_id
Add a verification step so that traffic fails on router-interface-delete
harden the cleanup process

Change-Id: I6ceaacb6dec9598b98750032391bc67d7081f002
It is possible that .ssh folder may not be present at all, handle it

Change-Id: I6a730a32533ba65f384d896373d7dae9214fd930
Add support for env var OS_INSECURE to control secure auth with keystone

    To force secure auth, set 'export OS_INSECURE='
    To force insecure auth, set 'export OS_INSECURE=1'
    Currently, only insecure auth will work
    If secure auth is forced, certificate would need be provided, support for which
    will be added soon

Change-Id: I6760624ae13603312c54397fba431bfa4625fc16
Handle case where OS_AUTH_URL is not set in env

Change-Id: I3ee1783567e151c743db4c67f431a1320f6b04fe
Merge pull request #84 from vedujoshi/test_parallelism

Add a test and additional validations and fix bugs