Sync 'scratch_scripts' with internal CI

Sync the scripts with open-ci commit:
539c151d0cd99a5e6ca6c0e6966f6d8579fe864e

Signed-off-by: Zelalem <zelalem.aweke@arm.com>
Change-Id: Id9acd8b411b97b4b0df4c011350fcbd5e3e3fed1
diff --git a/script/scratch_scripts/fast-forward-master.sh b/script/scratch_scripts/fast-forward-master.sh
new file mode 100755
index 0000000..176712d
--- /dev/null
+++ b/script/scratch_scripts/fast-forward-master.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+#
+# Copyright (c) 2020, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+# Fast forward master branch with integration
+
+set -e
+
+git clone ssh://$CI_BOT_USERNAME@review.trustedfirmware.org:29418/TF-A/trusted-firmware-a
+cd trusted-firmware-a
+git checkout master
+git merge --ff-only origin/integration
+git push origin master
+cd ..
+rm -rf trusted-firmware-a