public_html directory service, see RT #6862

module for public_html service, hostname people.wikimedia.org
added to misc cache cluster, to be served by terbium,
caching disabled.  manifests not yet tested.

RT: 6862
Change-Id: I2716be4629380404b21aa46ae63e0ce3928a015c
Merge "public_html directory service, see RT #6862" into production