[core] Call super() in HueRemoteUserMiddleware
After deploying Hue 4.9 I got the following error:
AttributeError: 'HueRemoteUserMiddleware' object has no attribute 'get_response'
I have Hue set up with
backend=desktop.auth.backend.RemoteUserDjangoBackend, httpd is in front
of it with Apereo Cas and passes the username as part of a remote
header.
HueRemoteUserMiddleware inherits from RemoteUserMiddleware, that with
Django 2.x inherits from MiddlewareMixin, that requires get_response.