Global option for enforcing scope (ENFORCE_SCOPE)

This updates each devstack service library, to use it as the
default value for service-specific RBAC configuration.

Change-Id: I41061d042206c411ee3dd94ce91098e612af7ae7
diff --git a/lib/neutron-legacy b/lib/neutron-legacy
index b906a1b..253b457 100644
--- a/lib/neutron-legacy
+++ b/lib/neutron-legacy
@@ -500,7 +500,7 @@
 # configure_rbac_policies() - Configure Neutron to enforce new RBAC
 # policies and scopes if NEUTRON_ENFORCE_SCOPE == True
 function configure_rbac_policies {
-    if [ "$NEUTRON_ENFORCE_SCOPE" == "True" ]; then
+    if [[ "$NEUTRON_ENFORCE_SCOPE" == "True" || "$ENFORCE_SCOPE" == True ]]; then
         iniset $NEUTRON_CONF oslo_policy enforce_new_defaults True
         iniset $NEUTRON_CONF oslo_policy enforce_scope True
     else