This also fixes this version check utility since it was utterly broken
before. While it did run to completion, it never properly returned any
versions that needed updating.

TrivialFix

Change-Id: If5d77f20fd8fc97679d58bc9019115157c5f5967

Same method we use for build.py

TrivialFix

Change-Id: Ib2a7bbfb8349c473e6fdbacbba239985b05ec0bd

As we will be switching to pinning versions in Kolla this tool will
help remove the 'manual' part of that equation by looking up the
versions we want.

The idea would be to eventually turn this into an autoproposal bot so
we only ever need to approve changes.

More work can be done here like automatically updating the
kolla-build.conf

Co-Authored-By: Martin André <m.andre@redhat.com>
Partially-Implements: blueprint upgrade-kolla

Change-Id: I052159850b2579ca6db79be71672be382be8a3a3