* Rename kolla namespace to kolla_ansible
* remove oslo.config.opts entry points which is uesless
* delete useless tools/version-check.py script

Change-Id: I005dd7223ff23afbb2ce8cbfd0ebec0969102798

pbr was failing to find a correct version when kolla-ansible was
installed via 'pip install ...'

Thanks to dhellmann for the fix.

Change-Id: I5be5fc6709c729141a43d3c69384a5f7a9b2e8f8
Closes-Bug: #1662195

We'd better use 'kolla-ansible' instead of 'kolla'

Change-Id: I61b1939884b319fc7cd2fe7a7c615e88a72d7894

Closes-Bug: #1530122
Change-Id: I96039eade2aacf1bcd9d14d958cdddd915fc9a5c