cliff can't run on Python 3.5 due to dependency cmd2 is not Python3.5 compatible

[ChangBo Guo(gcb)]

2016-07-12 07:18:37.325442 | Traceback (most recent call last):
2016-07-12 07:18:37.325488 | File "/home/jenkins/workspace/gate-cliff-python35-nv/.tox/py35/lib/python3.5/site-packages/nose/case.py", line 198, in runTest
2016-07-12 07:18:37.325506 | self.test(*self.arg)
2016-07-12 07:18:37.325549 | File "/home/jenkins/workspace/gate-cliff-python35-nv/cliff/tests/test_app.py", line 58, in test_interactive_mode_cmdloop
2016-07-12 07:18:37.325564 | app.run([])
2016-07-12 07:18:37.325603 | File "/home/jenkins/workspace/gate-cliff-python35-nv/cliff/app.py", line 224, in run
2016-07-12 07:18:37.325632 | result = self.interact()
2016-07-12 07:18:37.325669 | File "/home/jenkins/workspace/gate-cliff-python35-nv/cliff/app.py", line 263, in interact
2016-07-12 07:18:37.325692 | from .interactive import InteractiveApp
2016-07-12 07:18:37.325729 | File "/home/jenkins/workspace/gate-cliff-python35-nv/cliff/interactive.py", line 8, in <module>
2016-07-12 07:18:37.325745 | import cmd2
2016-07-12 07:18:37.325789 | File "/home/jenkins/workspace/gate-cliff-python35-nv/.tox/py35/lib/python3.5/site-packages/cmd2.py", line 187, in <module>
2016-07-12 07:18:37.325808 | if subprocess.mswindows:
2016-07-12 07:18:37.325837 | AttributeError: module 'subprocess' has no attribute 'mswindows'

[ChangBo Guo(gcb) (glongwave)]

cmd2 fixed this issue in : https://github.com/python-cmd2/cmd2/commit/6ee37b45de8d2a8a1fe9f4db7f7a4b77f216b9ed

but didn't release a new version to include this fix for a long time.

[Doug Hellmann (doug-hellmann)]

I've been thinking for a while that we should move off of cmd2. I don't even remember what features it had that cmd doesn't have and that we care about, so figuring that out is probably good first step.

[Tang Chen (tangchen)]

Looking at it.

[Dr. Jens Harbott (j-harbott)]

cmd2=0.6.9 has been released some time ago, which seems to contain the above mentioned patch, is this bug still valid?

[Steve Martinelli (stevemar)]

@Jens, seems invalid now. Thanks for investigating gcb and jens