(packaging) Remove Ubuntu Oneiric, add Raring

Oneiric is EOL, and we are no longer building for it. This commit removes the
Oneiric target from the build list for puppet. We also now build for Raring
Ringtail, so we add this to targets.

Signed-off-by: Moses Mendoza <moses@puppetlabs.com>
Merge pull request #540 from MosesMendoza/maint/master/remove_oneiric

(packaging) Remove Ubuntu Oneiric, add Raring