Add new configuration of StackLight on virtual-mcp-newton-ovs model

Change-Id: I7ab5d0989d6a4031095f54fdf4fe25bf87fb9caa
diff --git a/classes/cluster/virtual-mcp-mitaka-ovs/.env b/classes/cluster/virtual-mcp-mitaka-ovs/.env
index 047f7b5..49c1ca4 100644
--- a/classes/cluster/virtual-mcp-mitaka-ovs/.env
+++ b/classes/cluster/virtual-mcp-mitaka-ovs/.env
@@ -1 +1 @@
-EXTRA_FORMULAS="ntp sphinx nginx heka grafana rsyslog prometheus telegraf collectd memcached"
+EXTRA_FORMULAS="fluentd grafana heka nginx ntp prometheus rsyslog sphinx telegraf"