(Bug #22163) remove hardcoded hostname dependencies

Prior to this commit, burji.puppetlabs.com was hardcoded in different
points of puppet. Since we're in the process of migrating off burji and
onto burji2, we realized this probably is not a good thing to have in
place. This commit removes that hardcoded dependency on burji.
Merge pull request #515 from melissaanne/maint/stable/re-144_rm-hardcoded-dependencies

(Bug #22163) remove hardcoded hostname dependencies