- pbr hasn't need the hook configuration since forever [1]
- The 'wheel' group is renamed to 'bdist_wheel' [2]
- Update the urls to latest
[1] c84876dc0f
[2] f7c9878712
Change-Id: I52e7abcb577e3a9ba61492e84a3c148f6eab4b4a
Add links to the bug tracker and source in a way the release script can
find them.
Move the contributing instructions to a separate file, where github will
pick them up and the release tools won't be confused by the urls.
Change-Id: Icbc1fdde3245ef6aa750bd44601adb1514763034