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: Iabbed6052887ba92c07cb68c2333a197f04348cc

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 2.5.0
-envlist = py27,py37,pep8,eslint,karma
+envlist = py27,py37,py3-{dj111,dj22},pep8,eslint,karma
 skipsdist = True
 
 [testenv]
@@ -15,7 +15,10 @@ deps = -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/
        -r{toxinidir}/test-requirements.txt
 whitelist_externals = npm
                       bash
-commands = python manage.py test octavia_dashboard --settings=octavia_dashboard.tests.settings
+commands =
+   dj111: pip install django>=1.11,<2
+   dj22: pip install django>=2.2,<2.3
+   python manage.py test octavia_dashboard --settings=octavia_dashboard.tests.settings
 
 [testenv:pep8]
 basepython = python3

zuul.d/projects.yaml

@@ -1,6 +1,7 @@
 - project:
     templates:
       - check-requirements
+      - horizon-non-primary-django-jobs
       - horizon-nodejs10-jobs
       - openstack-lower-constraints-jobs
       - openstack-python-jobs-horizon