Add mitaka models with trusty

Mitaka models with trusty for maintenance team purposes.
Change-Id: I8eac7ac18d7f7632bdfb36c550eb1ee4c1b4cc80
diff --git a/classes/cluster/virtual-mcp-mitaka-dvr-trusty/.env b/classes/cluster/virtual-mcp-mitaka-dvr-trusty/.env
new file mode 100644
index 0000000..d2e169a
--- /dev/null
+++ b/classes/cluster/virtual-mcp-mitaka-dvr-trusty/.env
@@ -0,0 +1 @@
+EXTRA_FORMULAS="ntp sphinx nginx heka grafana rsyslog prometheus telegraf memcached collectd fluentd"