Fix up invalid YML in the repo declaration stanzas for ubuntu 12.04.

Also remove old unsupported operating systems.
Update git repos to use https scheme.
Merge pull request #64 from VictorLowther/pull-req-feature-grizzly-master-9a77ef6723b715acfb8d892036d330758f85a940

Make feature/grizzly a little more amenable to being built in the Dell build and test env. [8/11]