Add sl-pike-dvr model

Change-Id: If04256f2ebf0430ce7aec8caac28b780776e1c8d
diff --git a/classes/cluster/sl-pike-dvr/.env b/classes/cluster/sl-pike-dvr/.env
new file mode 100644
index 0000000..13e6475
--- /dev/null
+++ b/classes/cluster/sl-pike-dvr/.env
@@ -0,0 +1 @@
+FORMULAS_SALT_MASTER+=(fluentd git grafana linux nginx ntp openssh prometheus reclass rsyslog salt sphinx telegraf backupninja)