Use Horizon project template for django jobs

Horizon defined a project template 'horizon-non-primary-django-jobs'
for django jobs. This patch use that template to run django jobs
here. For information please refer [1]

[1] https://review.opendev.org/#/c/681969/

Change-Id: I174e607f7b1193eec0fa0a28bb39b2c945013495

.zuul.yaml

@@ -25,6 +25,7 @@
     templates:
       - check-requirements
       - horizon-nodejs10-jobs
+      - horizon-non-primary-django-jobs
       - openstack-lower-constraints-jobs
       - openstack-python-jobs
       - openstack-python3-train-jobs

tox.ini

@@ -1,7 +1,7 @@
 [tox]
 minversion = 1.8
 skipsdist = True
-envlist = py3,py27,pep8
+envlist = py3,py27,py3-{dj111,dj22},pep8
 
 [testenv]
 usedevelop = True
@@ -15,7 +15,10 @@ setenv = VIRTUAL_ENV={envdir}
          DJANGO_SETTINGS_MODULE=ironic_ui.test.settings
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
-commands = {toxinidir}/manage.py test ironic_ui --settings=ironic_ui.test.settings --exclude-tag integration
+commands =
+   dj111: pip install django>=1.11,<2
+   dj22: pip install django>=2.2,<2.3
+   {toxinidir}/manage.py test ironic_ui --settings=ironic_ui.test.settings --exclude-tag integration
 
 [testenv:integration]
 # Run integration tests only