Add workaround script for midonet-elk

Change-Id: I69106707276a621dbf0887ecbf4cf0b98d033314
(cherry picked from commit 3fb3d39896)

files/analytics/install-midonet-elk.sh

@@ -0,0 +1,24 @@
+#!/bin/bash -eux
+#
+# WORKAROUND:
+# In some cases the package midonet-elk doesn't get installed properly
+# and some of the packaged files are not placed where they should
+# (e.g. /etc/logstash/conf.d/midonet.conf)
+
+# Check if MidoNet logstash configuration file is there
+if [ -f /etc/logstash/conf.d/midonet.conf ]; then
+  exit 0
+fi
+
+# Purge midonet-elk and reinstall it, the hard way
+rpm -e --justdb --nodeps midonet-elk
+yumdownloader --destdir /tmp/ midonet-elk
+yum localinstall /tmp/midonet-elk*.rpm
+cd /
+rpm2cpio /tmp/midonet-elk*.rpm | cpio -idmv
+rm /tmp/midonet-elk*.rpm
+
+# Restart logstash if already running
+systemctl status logstash.service | grep running > /dev/null && systemctl restart logstash.service || true
+
+exit 0