Fix HaproxyBackendDownMajor condition

- show in $value number of down backends

Change-Id: Ie300b9ace09100ef7171fd9b0ee91096ac8509ff
Related-bug: PROD-35685
diff --git a/tests/test-requirements.txt b/tests/test-requirements.txt
new file mode 100644
index 0000000..cf42007
--- /dev/null
+++ b/tests/test-requirements.txt
@@ -0,0 +1 @@
+msgpack<1.0.0