Sync job files with internal CI

Sync job files with platform-ci commit:
539c151d0cd99a5e6ca6c0e6966f6d8579fe864e

Signed-off-by: Zelalem <zelalem.aweke@arm.com>
Change-Id: Ida470e00da76188ce3987d1fa93ec758b5e0f23a
diff --git a/job/tf-gerrit-bot/run_gerrit_bot.sh b/job/tf-gerrit-bot/run_gerrit_bot.sh
new file mode 100755
index 0000000..796e29a
--- /dev/null
+++ b/job/tf-gerrit-bot/run_gerrit_bot.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+#
+# Copyright (c) 2019, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+# Install pygerrit2 if needed
+python3 -c "from pygerrit2 import GerritRestAPI, HTTPBasicAuth"
+if [ $? != 0 ]
+then
+	yes | pip3 install pygerrit2
+fi
+
+# Run bot
+cd $(dirname "$0")
+python3 gerrit_bot.py --user $1 --password $2 --maintainers $3