Add the option to wait for another service/s before starting (systemd only)

PROD-34894

Change-Id: Ifac85c9180fd3eb87c52460342988581bf244d09
diff --git a/tests/test-requirements.txt b/tests/test-requirements.txt
new file mode 100644
index 0000000..bc7dc7f
--- /dev/null
+++ b/tests/test-requirements.txt
@@ -0,0 +1,4 @@
+jsonschema
+reno
+setuptools<45.0.0
+msgpack<1.0.0