Add backupninja to .env files for E// models

Change-Id: I8fc7476953d11403b312adb78c874678e64e9e5d
diff --git a/classes/cluster/virtual-mcp-pike-dvr/.env b/classes/cluster/virtual-mcp-pike-dvr/.env
index 54bad51..13e6475 100644
--- a/classes/cluster/virtual-mcp-pike-dvr/.env
+++ b/classes/cluster/virtual-mcp-pike-dvr/.env
@@ -1 +1 @@
-FORMULAS_SALT_MASTER+=(fluentd git grafana linux nginx ntp openssh prometheus reclass rsyslog salt sphinx telegraf)
+FORMULAS_SALT_MASTER+=(fluentd git grafana linux nginx ntp openssh prometheus reclass rsyslog salt sphinx telegraf backupninja)