Add validations-libs as an extra requirement

Change-Id: I5bc1ce84a2963a0dd0e3d9e13008544c5cfe3e8f

extra-requirements.txt

@@ -0,0 +1 @@
+validations-libs>=1.0

tox.ini

@@ -10,9 +10,10 @@ minversion = 3.8.0
 
 usedevelop = True
 deps =
-    -c{env:TOX_CONSTRAINTS_FILE}
+    {env:TOX_CONSTRAINTS}
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt
+    {env:TOX_EXTRA_REQUIREMENTS}
 passenv =
     JENKINS_*
     PS1
@@ -30,7 +31,9 @@ setenv =
     TOBIKO_PREVENT_CREATE = {env:TOBIKO_PREVENT_CREATE:false}
     TOX_REPORT_NAME = {env:TOX_REPORT_NAME:test_results}
     TOX_REPORT_DIR = {env:TOX_REPORT_DIR:{toxinidir}/report/{envname}}
+    TOX_CONSTRAINTS = {env:TOX_CONSTRAINTS:-c{env:TOX_CONSTRAINTS_FILE}}
     TOX_CONSTRAINTS_FILE = {env:TOX_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt}
+    TOX_EXTRA_REQUIREMENTS = {env:TOX_EXTRA_REQUIREMENTS:-r{toxinidir}/extra-requirements.txt}
     VIRTUAL_ENV = {envdir}
 commands =
     {envpython} {toxinidir}/tools/run_tests.py {env:RUN_TESTS_EXTRA_ARGS} {posargs}

zuul.d/devstack.yaml

@@ -13,6 +13,7 @@
       - openstack/heat
       - openstack/neutron
       - openstack/requirements
+      - openstack/validations-libs
       - x/tobiko
     timeout: 7200
     vars: