[undertow-dev] Overriding Authentication Mechanism for the deployment

[Anil Saldhana]

Hi Stuart/Darran,
   I sent in a PR 
(https://github.com/anilsaldhana/undertow/commit/70838540d01c821973b38f530a97be2f54e83c13) 
to override the authentication mechanism used for a particular web app 
irrespective of what is configured in web.xml login config

I need this behavior to introduce saml workflow into a web app.

I put the API change at the DeploymentManagerImpl level.  If you have a 
better alternative, I would like to hear.

Regards,
Anil