Add RBAC scope and new defaults setting support for Nova & Tempest

Nova is ready with the scope and new defaults as per the new
RBAC design. Adding devstack flag to enable the scope checks
and new defaults enforcement in nova side.

Change-Id: I305ea626a4b622c5534d523f4b619832f9d35f8d
diff --git a/lib/tempest b/lib/tempest
index 87a2244..b232f24 100644
--- a/lib/tempest
+++ b/lib/tempest
@@ -674,6 +674,10 @@
         iniset $TEMPEST_CONFIG auth admin_project_name ''
     fi
 
+    if [[ "$NOVA_ENFORCE_SCOPE" == True || "$ENFORCE_SCOPE" == True ]] ; then
+        iniset $TEMPEST_CONFIG enforce_scope nova true
+    fi
+
     if [[ "$GLANCE_ENFORCE_SCOPE" == True || "$ENFORCE_SCOPE" == True ]] ; then
         iniset $TEMPEST_CONFIG enforce_scope glance true
     fi