Add setuptools requirement for version below 45.0.0

Versions of setuptools from 45.0.0 dropped python2 support.

Related-Prod: PROD-34533
Change-Id: Id535e699ffdd68879830950836381e104d02a132
(cherry picked from commit 58934c28bf8255d635eb489954c073fa1766ea37)
diff --git a/tests/test-requirements.txt b/tests/test-requirements.txt
index a0f561a..7188b2b 100644
--- a/tests/test-requirements.txt
+++ b/tests/test-requirements.txt
@@ -1,2 +1,3 @@
 jsonschema
 reno
+setuptools<45.0.0