[XNATWORKS] Investigate XNATAuthenticator plugin workflow for openid

[tclose]

@fxusyd:

roles_response = requests.get(f'{xnat_url}/xapi/users/{username}/roles', auth=(username, password))
Above is why the openid user won’t authenticate again after user log out of the notebook

When the notebook refresh, XNATAuthenticator is called.
Therefore, it won’t work for openid user

[tclose]

@rherrick suggested trying this without the proxy running

[aswinnarayanan]

Replaced with AAFAuthenticator solution