Add setuptools requirement for version below 45.0.0

Versions of setuptools from 45.0.0 dropped python2 support.

Change-Id: Ib4fc8917b3987b4052b66b9d39ba7ecb8f757302
Related-Prod: PROD-34533
(cherry picked from commit e3d1972f0fc6b34607081276eadedd07e70128cf)
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