As of firefly (v0.80), ceph object gateway is running on civetweb
(embedded into the ceph-radosgw daemon) instead of apache and fastcgi.
Using civetweb simplifies the ceph object gateway installation and
configuration.
Change-Id: Idba61e094390e3c75a6e5d9b35a8e8e47a2a696f
Closes-Bug: #1671808