Remove/change deprecated Django modules

Author: ipmb

tests/ext/django/app/settings.py

@@ -44,7 +44,6 @@
     'django.middleware.common.CommonMiddleware',
     'django.middleware.csrf.CsrfViewMiddleware',
     'django.contrib.auth.middleware.AuthenticationMiddleware',
-    'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
     'django.contrib.messages.middleware.MessageMiddleware',
     'django.middleware.clickjacking.XFrameOptionsMiddleware',
     'django.middleware.security.SecurityMiddleware',

tests/ext/django/test_middleware.py

@@ -1,6 +1,6 @@
 import django
 from aws_xray_sdk import global_sdk_config
-from django.core.urlresolvers import reverse
+from django.urls import reverse
 from django.test import TestCase
 
 from aws_xray_sdk.core import xray_recorder, lambda_launcher