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: I6fd838618048f7cd373e477d176e9ad2ee8e3f09

.zuul.yaml

@@ -1,14 +1,9 @@
 - project:
     templates:
       - check-requirements
+      - horizon-non-primary-django-jobs
       - openstack-lower-constraints-jobs
       - openstack-python-jobs-horizon
       - openstack-python3-train-jobs-horizon
       - publish-openstack-docs-pti
       - release-notes-jobs-python3
-    check:
-      jobs:
-        - horizon-openstack-tox-python3-django111
-    gate:
-      jobs:
-        - horizon-openstack-tox-python3-django111

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 2.0
-envlist = py37,py36,py27,pep8
+envlist = py37,py36,py27,py3-{dj111,dj22},pep8
 skipsdist = True
 
 [testenv]
@@ -18,6 +18,8 @@ deps =
   -r{toxinidir}/requirements.txt
   -r{toxinidir}/test-requirements.txt
 commands =
+    dj111: pip install django>=1.11,<2
+    dj22: pip install django>=2.2,<2.3
     rm -f .testrepository/times.dbm
     find . -type f -name "*.pyc" -delete
     find . -type d -name "__pycache__" -delete
@@ -33,12 +35,6 @@ commands = flake8
 basepython = python3
 commands = {posargs}
 
-[testenv:py3-dj111]
-basepython = python3
-commands =
-  pip install django>=1.11,<2
-  {[testenv]commands}
-
 [testenv:py27integration]
 basepython = python2.7
 commands = /bin/bash run_tests.sh -N --integration --selenium-headless {posargs}