git-if-needed: read patches from a series file.
Change-Id: I29c87e8448f89deaab0c04678296b25013982486
diff --git a/tools/git-if-needed/tests/data/openstack/cinder/another-file.patch b/tools/git-if-needed/tests/data/openstack/cinder/another-file.patch
new file mode 100644
index 0000000..7286cdb
--- /dev/null
+++ b/tools/git-if-needed/tests/data/openstack/cinder/another-file.patch
@@ -0,0 +1,21 @@
+From 5c71ff4ba69bd0b95a6f3747886f10480dc24db3 Mon Sep 17 00:00:00 2001
+From: Peter Penchev <openstack-dev@storpool.com>
+Date: Tue, 3 Dec 2019 16:11:53 +0200
+Subject: [PATCH 3/3] Add another file.
+
+Change-Id: Ieb2a7d5346a74e8af3569d08057a8c83a537a1ad
+---
+ TODO.txt | 1 +
+ 1 file changed, 1 insertion(+)
+ create mode 100644 TODO.txt
+
+diff --git a/TODO.txt b/TODO.txt
+new file mode 100644
+index 0000000..209db4a
+--- /dev/null
++++ b/TODO.txt
+@@ -0,0 +1 @@
++Things to do. Or something.
+--
+2.24.0
+