Adding "region and endpoint_type" parameters to barbican_acl.py

When requesting for a barbican client, this change lets you filter based on
region and endpoint_type.

Change-Id: I78ba726dcd921a6344bfc88c832f19e11fb4d781

neutron_lbaas/common/cert_manager/barbican_auth/barbican_acl.py

@@ -17,6 +17,7 @@
 Barbican ACL auth class for Barbican certificate handling
 """
 from barbicanclient import client as barbican_client
+from oslo_config import cfg
 from oslo_log import log as logging
 from oslo_utils import excutils
 
@@ -26,6 +27,8 @@ from neutron_lbaas.common import keystone
 
 LOG = logging.getLogger(__name__)
 
+CONF = cfg.CONF
+
 
 class BarbicanACLAuth(common.BarbicanAuth):
     _barbican_client = None
@@ -35,7 +38,9 @@ class BarbicanACLAuth(common.BarbicanAuth):
         if not cls._barbican_client:
             try:
                 cls._barbican_client = barbican_client.Client(
-                    session=keystone.get_session()
+                    session=keystone.get_session(),
+                    region_name=CONF.service_auth.region,
+                    interface=CONF.service_auth.endpoint_type
                 )
             except Exception:
                 with excutils.save_and_reraise_exception():

neutron_lbaas/common/keystone.py

@@ -70,6 +70,11 @@ OPTS = [
         'auth_version',
         default='2',
         help=_('The auth version used to authenticate'),
+    ),
+    cfg.StrOpt(
+        'endpoint_type',
+        default='public',
+        help=_('The endpoint_type to be used')
     )
 ]