It asks for the OPNFV Kali upper-constraints
https://build.opnfv.org/ci/job/functest-kubernetes-run-tox-kali/9/console
Change-Id: Id921ab3331e49994765772773fc8a9074258fd8e
Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
 [testenv]
 usedevelop = True
 deps =
-  -chttps://git.opnfv.org/functest/plain/upper-constraints.txt
+  -chttps://git.opnfv.org/functest/plain/upper-constraints.txt?h=stable/kali
   -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/stable/ussuri/upper-constraints.txt}
   -r{toxinidir}/requirements.txt
   -r{toxinidir}/test-requirements.txt