Add insecure option to other calls of KeystoneCommands

Change-Id: Iceb16a1667938967a58bbca710c218729d197780
Merge remote-tracking branch 'upstream/test_parallelism' into test_parallelism
make send_mail.py run in python 2.6 env also

Change-Id: I4d343b9161b209c64cd3bf14e1f382782be97db8
Merge pull request #92 from vedujoshi/test_parallelism

Add insecure option to KeystoneCommands calls, enable send_mail to run in python2.6 env