Update TOX_CONSTRAINTS_FILE for stable/victoria

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/victoria branch, tests will
continue to use the upper-constraints list on master.

Change-Id: Ic528f2e22d33b6d674a9369dafb1c297b30f4e38

.gitreview

@@ -2,4 +2,4 @@
 host=review.opendev.org
 port=29418
 project=openstack/python-watcherclient.git
-defaultbranch=stable/wallaby
+defaultbranch=stable/victoria

.zuul.yaml

@@ -1,7 +1,8 @@
 - project:
     templates:
       - openstack-cover-jobs
-      - openstack-python3-wallaby-jobs
+      - openstack-lower-constraints-jobs
+      - openstack-python3-victoria-jobs
       - publish-openstack-docs-pti
       - check-requirements
       - openstackclient-plugin-jobs

tox.ini

@@ -11,7 +11,7 @@ install_command = pip install {opts} {packages}
 setenv =
    VIRTUAL_ENV={envdir}
 deps =
-  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/wallaby}
+  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/victoria}
   -r{toxinidir}/test-requirements.txt
   -r{toxinidir}/requirements.txt
 whitelist_externals =
@@ -43,7 +43,8 @@ commands =
 [testenv:docs]
 basepython = python3
 deps =
-  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/wallaby}
+  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/victoria}
+  -r{toxinidir}/requirements.txt
   -r{toxinidir}/doc/requirements.txt
 commands = sphinx-build -W -b html doc/source doc/build/html
 
@@ -78,3 +79,11 @@ commands = python setup.py bdist_wheel
 
 [hacking]
 import_exceptions = watcherclient._i18n
+
+[testenv:lower-constraints]
+basepython = python3
+install_command = pip install -U {opts} {packages}
+deps =
+  -c{toxinidir}/lower-constraints.txt
+  -r{toxinidir}/test-requirements.txt
+  -r{toxinidir}/requirements.txt