This patch enables the plugin to setup ceph radosgw and configures
it as a swift-compatible endpoint with keystone integration.
ENABLE_CEPH_RGW is the new variable introduced, which is False
by default, and can be set to True in localrc if radosgw needs
to be setup.
Fixed couple of other (related) things ...
1) Created rgw specific functions
2) Checking for radosgw & swift co-existence, erroring out early enough
NOTE: Tested on ubuntu trusty only
TODOs ...
1) Not tested on Fedora (F22), radosgw startup has some issues there.
Co-Authored-By: Deepak C Shetty <deepakcs@redhat.com>
Change-Id: I21db4168eb69d107599f6b6ab1668b02b764b2c6
592c7d5711