networking-bgpvpn/bgpvpn_dashboard at 3712e2dee6bfecd91b37ebd9cd0c52c9ebd6877c - networking-bgpvpn - OpenDev: Free Software Needs Free Tools

Replaces 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
The arguments of include() has been changed in Django 1.9
and the older style was dropped in Django 2.0.
https://docs.djangoproject.com/en/2.0/releases/1.9/#passing-a-3-tuple-or-an-app-name-to-include
Add py35dj20 job to test Django 2.0 integration.
Change-Id: I1cdfc19c9fae5cad1adac0867f65d2ae15385d87