Use downstream keystone

Author: seunghun1ee

etc/kayobe/kolla.yml

@@ -135,6 +135,10 @@ kolla_sources:
     type: git
     location: https://github.com/stackhpc/stackhpc-inspector-plugins.git
     reference: 1.3.0
+  keystone-base:
+    type: git
+    location: https://github.com/stackhpc/keystone.git
+    reference: smslab/{{ openstack_release }}
   magnum-base:
     type: git
     location: https://github.com/stackhpc/magnum.git