Applying misc::graphite::gdash makes host a gdash deployment target

My plan is to carefully carve out the old Gdash-deploy-via-Puppet cruft. Need
to make sure Gdash's git-deploy configs work, first.

Change-Id: Ib9daf2727664e3b9776f8eb8ca0797f2c8a3af7c
Merge "Applying misc::graphite::gdash makes host a gdash deployment target" into production