Add .env for virtual-mcp11-contrail

Change-Id: I068e621c8be09f9f21728d12cd4d6c5a21ec7246
diff --git a/classes/cluster/virtual-mcp11-contrail/.env b/classes/cluster/virtual-mcp11-contrail/.env
new file mode 100644
index 0000000..a4bacd1
--- /dev/null
+++ b/classes/cluster/virtual-mcp11-contrail/.env
@@ -0,0 +1 @@
+EXTRA_FORMULAS="grafana heka nginx ntp prometheus rsyslog sphinx telegraf"