Add a new middleware to force-logout local-only users

when the DISABLE_LOCAL_AUTH setting is set.  This avoids the ugliness
of getting a SuspiciousOperation error for any request/response cycles
that are in flight when a user gets bounced.

awx/settings/defaults.py

@@ -914,6 +914,7 @@ MIDDLEWARE = [
     'django.middleware.common.CommonMiddleware',
     'django.middleware.csrf.CsrfViewMiddleware',
     'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'awx.main.middleware.DisableLocalAuthMiddleware',
     'django.contrib.messages.middleware.MessageMiddleware',
     'awx.sso.middleware.SocialAuthMiddleware',
     'crum.CurrentRequestUserMiddleware',