Django 2.0 support

Replace django.core.urlresolves with django.urls

(In Django 2.0) The django.core.urlresolvers module is removed
in favor of its new location, django.urls.
It was deprecated in Django 1.10:
https://docs.djangoproject.com/en/2.0/releases/1.10/#id3

Add py35dj20 job to test Django 2.0 integration.

Change-Id: I89dea8aaeb2a7d42a9ce99e7cb236c491b34c138

.zuul.yaml

@@ -2,6 +2,12 @@
     check:
       jobs:
         - openstack-tox-lower-constraints
+        - horizon-openstack-tox-py35dj20:
+            required-projects:
+              openstack/horizon
     gate:
       jobs:
         - openstack-tox-lower-constraints
+        - horizon-openstack-tox-py35dj20:
+            required-projects:
+              openstack/horizon

congress_dashboard/datasources/forms.py

@@ -14,7 +14,7 @@
 
 import logging
 
-from django.core.urlresolvers import reverse
+from django.urls import reverse
 from django.utils.translation import ugettext_lazy as _
 from horizon import exceptions
 from horizon import forms

congress_dashboard/datasources/tables.py

@@ -12,8 +12,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from django.core.urlresolvers import reverse
 from django.template.defaultfilters import unordered_list
+from django.urls import reverse
 from django.utils.translation import ugettext_lazy as _
 from django.utils.translation import ungettext_lazy
 from horizon import tables

congress_dashboard/datasources/views.py

@@ -15,9 +15,9 @@
 import copy
 import logging
 
-from django.core.urlresolvers import reverse
-from django.core.urlresolvers import reverse_lazy
 from django.template.defaultfilters import slugify
+from django.urls import reverse
+from django.urls import reverse_lazy
 from django.utils.translation import ugettext_lazy as _
 from horizon import exceptions
 from horizon import forms

congress_dashboard/library/tables.py

@@ -12,8 +12,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from django.core.urlresolvers import reverse
 from django.template.defaultfilters import linebreaksbr
+from django.urls import reverse
 from django.utils.translation import ugettext_lazy as _
 from django.utils.translation import ungettext_lazy
 from horizon import tables

congress_dashboard/monitoring/tables.py

@@ -14,7 +14,7 @@
 
 import logging
 
-from django.core.urlresolvers import reverse
+from django.urls import reverse
 from django.utils.translation import ugettext_lazy as _
 from horizon import tables
 

congress_dashboard/policies/forms.py

@@ -14,7 +14,7 @@
 
 import logging
 
-from django.core.urlresolvers import reverse
+from django.urls import reverse
 from django.utils.translation import ugettext_lazy as _
 from horizon import exceptions
 from horizon import forms

congress_dashboard/policies/rules/forms.py

@@ -14,7 +14,7 @@
 
 import logging
 
-from django.core.urlresolvers import reverse
+from django.urls import reverse
 from django.utils.translation import ugettext_lazy as _
 from horizon import exceptions
 from horizon import forms

congress_dashboard/policies/rules/tables.py

@@ -14,8 +14,8 @@
 
 import logging
 
-from django.core.urlresolvers import reverse
 from django.template.defaultfilters import linebreaksbr
+from django.urls import reverse
 from django.utils.translation import ugettext_lazy as _
 from django.utils.translation import ungettext_lazy
 from horizon import exceptions

congress_dashboard/policies/rules/views.py

@@ -12,7 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from django.core.urlresolvers import reverse
+from django.urls import reverse
 from horizon import forms
 from horizon import workflows
 

congress_dashboard/policies/rules/workflows.py

@@ -15,8 +15,8 @@
 import logging
 import re
 
-from django.core.urlresolvers import reverse
 from django import template
+from django.urls import reverse
 from django.utils.text import slugify
 from django.utils.translation import ugettext_lazy as _
 from horizon import forms

congress_dashboard/policies/tables.py

@@ -14,7 +14,7 @@
 
 import logging
 
-from django.core.urlresolvers import reverse
+from django.urls import reverse
 from django.utils.translation import ugettext_lazy as _
 from django.utils.translation import ungettext_lazy
 from horizon import exceptions

congress_dashboard/policies/views.py

@@ -15,9 +15,9 @@
 import json
 import logging
 
-from django.core.urlresolvers import reverse
-from django.core.urlresolvers import reverse_lazy
 from django.template.defaultfilters import dictsort
+from django.urls import reverse
+from django.urls import reverse_lazy
 from django.utils.translation import ugettext_lazy as _
 from horizon import exceptions
 from horizon import forms

tox.ini

@@ -68,3 +68,9 @@ deps =
   -c{toxinidir}/lower-constraints.txt
   -r{toxinidir}/test-requirements.txt
   -r{toxinidir}/requirements.txt
+
+[testenv:py35dj20]
+basepython = python3.5
+commands =
+  pip install django>=2.0,<2.1
+  {[testenv]commands}