add Keystone region configuration

Change-Id: I2a0e74a0641a01bcb5e96ada0c013664e773b482
diff --git a/tests/pillar/compute_single.sls b/tests/pillar/compute_single.sls
index 036a140..fa22905 100644
--- a/tests/pillar/compute_single.sls
+++ b/tests/pillar/compute_single.sls
@@ -18,6 +18,7 @@
       password: password
     identity:
       engine: keystone
+      region: RegionOne
       host: 127.0.0.1
       port: 35357
       user: nova
@@ -36,6 +37,7 @@
       port: 9292
     network:
       engine: neutron
+      region: RegionOne
       host: 127.0.0.1
       port: 9696
     cache: