Add models with mitaka/newton os releases for maintenance purposes

Change-Id: I555bf37aba6c48be4d3513bb8f413fb809b6b25c
diff --git a/classes/cluster/virtual-mcp-mitaka-dvr/.env b/classes/cluster/virtual-mcp-mitaka-dvr/.env
new file mode 100644
index 0000000..d2e169a
--- /dev/null
+++ b/classes/cluster/virtual-mcp-mitaka-dvr/.env
@@ -0,0 +1 @@
+EXTRA_FORMULAS="ntp sphinx nginx heka grafana rsyslog prometheus telegraf memcached collectd fluentd"