Add RBD support with the location option
Add RBD support with the location option

Currently only 's3', 'swift', 'http' are supported
with the --location option of glance client.

Change-Id: I8300314cf246d7ad42c2353d4c122c4ff2b831f7
Fixes: bug #1176994

darren-wang/gl,wkoathp/glance,SUSE-Cloud/glance,takeshineshiro/glance,darren-wang/gl,rajalokan/glance,ntt-sic/glance,saeki-masaki/glance,ozamiatin/glance,wkoathp/glance,tanglei528/glance,redhat-openstack/glance,jumpstarter-io/glance,JioCloud/glance,saeki-masaki/glance,jumpstarter-io/glance,openstack/glance,paramite/glance,vuntz/glance,scripnichenko/glance,cloudbau/glance,sigmavirus24/glance,klmitch/glance,cloudbau/glance,rickerc/glance_audit,dims/glance,kfwang/Glance-OVA-OVF,openstack/glance,JioCloud/glance,stevelle/glance,sigmavirus24/glance,stevelle/glance,openstack/glance,ozamiatin/glance,dims/glance,redhat-openstack/glance,takeshineshiro/glance,paramite/glance,akash1808/glance,tanglei528/glance,klmitch/glance,scripnichenko/glance,akash1808/glance,SUSE-Cloud/glance,kfwang/Glance-OVA-OVF,vuntz/glance,rajalokan/glance,citrix-openstack-build/glance,ntt-sic/glance,citrix-openstack-build/glance,rickerc/glance_audit