Fix up new Django 3.0 deprecations

Mostly text based: force/smart_text, ugettext_*

awx/sso/conf.py

@@ -5,7 +5,7 @@ import urllib.parse as urlparse
 # Django
 from django.conf import settings
 from django.urls import reverse
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 # Django REST Framework
 from rest_framework import serializers