Split up the analysis report by "All", "Core", and "Infra" to allow
finer-grained reporting.

Provide a mechanism for excluding a large number of commits from the
git logs; the existing use of 'awk' breaks for large lists of exclusions.

Add the infrastructure projects to the grizzly release

Add a special version of Launchpad buglist.py to accomodate the openstack-ci
project's unique defect reporting hierarchy

Modify the existing buglist.py to catch missing milestones