Fix the projectgid fact.

This was weirdly circular before, where a ganglia manifest
created gmond.conf and then this fact (later) read that conf,
which was used in turn by ganglia.

Mostly moot now wince we aren't using ganglia in labs, but
this fact was still throwing warnings here and there.

Change-Id: I4e942515612b8da477b8782d9d7fc3c00c4bc304
Merge "Fix the projectgid fact." into production