Add logic for installing luigi service as part of backup app

rattail_fabric2/deploy/backup/overnight-backups.sh.mako

@@ -0,0 +1,28 @@
+#!/bin/bash
+${'#'}###############################################################################
+#
+# overnight "backups" automation
+#
+${'#'}###############################################################################
+
+set -e
+
+DATE=$1
+
+if [ "$1" = "--verbose" ]; then
+    DATE=$2
+    VERBOSE='--verbose'
+else
+    VERBOSE=
+fi
+
+if [ "$DATE" = "" ]; then
+    DATE=`date --date='yesterday' +%Y-%m-%d`
+fi
+
+LUIGI='${envpath}/bin/luigi --logging-conf-file luigi-logging.conf'
+export PYTHONPATH=${envpath}/app/
+
+cd ${envpath}/app/luigi
+
+$LUIGI --module luigitasks.overnight OvernightBackups --date $DATE