Update TOX_CONSTRAINTS_FILE for stable/zedstable/zed

Update the URL to the upper-constraints file to point to the redirect
rule on releases.openstack.org so that anyone working on this branch
will switch to the correct upper-constraints list automatically when
the requirements repository branches.

Until the requirements repository has as stable/zed branch, tests will
continue to use the upper-constraints list on master.

Change-Id: I6accddcf92950f4619a51ed85e7927c6c3fb9e77

1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index 49530e6..03a6cf9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,7 +8,7 @@ basepython = python3
 setenv =
     VIRTUAL_ENV={envdir}
 deps =
-    -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+    -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/zed}
     -r{toxinidir}/test-requirements.txt
 commands = stestr run --slowest {posargs}