(Bug #21768) Update puppet for F19

Prior to this commit, there was no support for Fedora 19. This
commit modifies build_defaults to include F19 in the mocks,
and removes the ruby(abi) requirement. This is because F19 no
longer provides ruby abi.
Merge pull request #1775 from melissaanne/maint/stable/f19-updates

(Bug #21761) Update puppet for F19