add keystone region support

Change-Id: Idc48db4db383ac793d2cafadbfcd100322df12e5
diff --git a/tests/pillar/server_cluster.sls b/tests/pillar/server_cluster.sls
index 7e917b7..ef6a978 100644
--- a/tests/pillar/server_cluster.sls
+++ b/tests/pillar/server_cluster.sls
@@ -1,6 +1,7 @@
 heat:
   server:
     enabled: true
+    region: RegionOne
     version: liberty
     stack_domain_admin:
       name: heat_domain_admin
diff --git a/tests/pillar/server_single.sls b/tests/pillar/server_single.sls
index dd679a2..667fc69 100644
--- a/tests/pillar/server_single.sls
+++ b/tests/pillar/server_single.sls
@@ -1,6 +1,7 @@
 heat:
   server:
     enabled: true
+    region: RegionOne
     version: liberty
     stack_domain_admin:
       name: heat_domain_admin