Add --url option to glance cli.
Add --url option to glance cli.

Adds ability to select between http/https protocols.

Fixes bug 898097.

Change-Id: I1d20f314fb7dd8c5462c1f1ff22161ab59c35016

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