Use upper constraints in tox jobs
keeps safe from dependencies drift.
Original upstream repo has master branch only so it does not have this
problem, everything is fixed on the go and only in one place.
Related-Issue: PROD-30711
Change-Id: Icfb8e9023a81b9986421f71fe07a7ab343a45c9c
(cherry picked from commit 3f6e114b196d908374a10fedf2e8a6a38d08ccca)
diff --git a/tox.ini b/tox.ini
index 5aa6b38..f2e1099 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,6 +10,7 @@
setenv = VIRTUAL_ENV={envdir}
deps = -r{toxinidir}/requirements.txt
-r{toxinidir}/test-requirements.txt
+ -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/ussuri}
commands = bash -c 'if [ ! -d ./.testrepository ] ; then testr init ; fi'
testr run {posargs}