Python module updates and tox fixes

Making a transition to stable and updating links and other metadata,
stop manually generating CHANGES and rely on pbr's automatically
generated Changelog file. Update servermon for the above
Merge util.py in make_updates.py

util.py only had 2 functions directly related to the make_updates django
management command. Remove the first one, being a one liner and merge
the second one in make_updates.py
epydoc changes

Fix excludes
Fail on error
Stop introspection
Indent keyvalue doc string

epydoc whines otherwise about lists needing to be indented