Configurable python-keystoneclient repo
Configurable python-keystoneclient repo

The URL for the python-keystoneclient repo couldn't be configured.
With this change, the user can set the OPENSTACK_REPO environment
variable to set the URL for where the python-keystoneclient repo
should be cloned from. So for example you can use a local clone.
The default OPENSTACK_REPO is https://git.openstack.org/openstack
which gets python-keystoneclient.git added ot it to make the clone
come from
https://git.openstack.org/openstack/python-keystoneclient.git.

Change-Id: I936713af3c11e8d68d8739dc68eefabd645df294

roopali8/keystone,dstanek/keystone,MaheshIBM/keystone,jumpstarter-io/keystone,rushiagr/keystone,jonnary/keystone,rajalokan/keystone,idjaw/keystone,jamielennox/keystone,mahak/keystone,vivekdhayaal/keystone,promptworks/keystone,ilay09/keystone,klmitch/keystone,takeshineshiro/keystone,klmitch/keystone,ging/keystone,nuxeh/keystone,rushiagr/keystone,ajayaa/keystone,cernops/keystone,maestro-hybrid-cloud/keystone,openstack/keystone,rajalokan/keystone,ging/keystone,maestro-hybrid-cloud/keystone,nuxeh/keystone,blueboxgroup/keystone,MaheshIBM/keystone,jumpstarter-io/keystone,jumpstarter-io/keystone,mahak/keystone,roopali8/keystone,himanshu-setia/keystone,ilay09/keystone,UTSA-ICS/keystone-kerberos,ajayaa/keystone,promptworks/keystone,jamielennox/keystone,rushiagr/keystone,rajalokan/keystone,idjaw/keystone,openstack/keystone,ilay09/keystone,openstack/keystone,dims/keystone,nuxeh/keystone,UTSA-ICS/keystone-kerberos,jonnary/keystone,dstanek/keystone,himanshu-setia/keystone,promptworks/keystone,takeshineshiro/keystone,vivekdhayaal/keystone,dstanek/keystone,blueboxgroup/keystone,dims/keystone,cernops/keystone,vivekdhayaal/keystone,mahak/keystone