added test pillars for contrail backend

Change-Id: I3f9766fae6fd699c752bb1a2a13e96b67a65f110
diff --git a/tests/pillar/control_single.sls b/tests/pillar/control_single.sls
index 15f7a8c..7d7494c 100644
--- a/tests/pillar/control_single.sls
+++ b/tests/pillar/control_single.sls
@@ -3,6 +3,11 @@
     enabled: true
     backend:
       engine: contrail
+      host: 127.0.0.1
+      user: admin
+      password: password
+      token: token
+      tenant: admin
     fwaas: false
     dns_domain: novalocal
     tunnel_type: vxlan