For installing collection from git like:
"ansible-galaxy collection install git+https://..." the galaxy.yml
file is required to be in the collection.
Add galaxy.yml with next version and "-dev".
Fix links for docs and issues.
Change-Id: I74863977732ebea9cd63ccdd2e830a6671a9e955
OpenStack in general uses git tags to drive versioning of artifacts.
This is important because of our code review driven workflow, since
patches don't necessarily land in a predictable sequence, so flows
requiring a version number in a file to be updated at a specific
time are problematic.
By having pbr generate the correct version number then putting that
into the galaxy.yml file, we can match the behavior without too much
undue burden.
Also ignore build_artifact directory.
Change-Id: Id02fee682fb5a4b6fd6dcb0644848e6d1269e19b
