Use TOX_CONSTRAINTS_FILE4.2.0

UPPER_CONSTRAINTS_FILE is old name and deprecated
This allows to use upper-constraints file as more
readable way instead of UPPER_CONSTRAINTS_FILE=<lower-constraints file>.

[1] https://review.opendev.org/#/c/722814/
[2] https://zuul-ci.org/docs/zuul-jobs/python-roles.html#rolevar-tox.tox_constraints_file

Change-Id: I086b5173b45ef5f4ce6691ad33af7903b0fd78e0

1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index 0c77734..7f2d756 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,7 +8,7 @@ basepython = python3
 setenv =
     VIRTUAL_ENV={envdir}
 deps =
-    -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+    -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
     -r{toxinidir}/test-requirements.txt
 commands = stestr run --slowest {posargs}