SAML Integration for Login

[sourabhaggrawal]

Motivation

Idea is to support authentication from ThirdParty using SAML Approach. Changes are backward compatible and existing Login Approach using credentials will continue to work.

Provide Third Party Login Support Using SAML

Modifications

Changes to login with ThirdParty using SAML implementation.

Verifying this change

• [x] Make sure that the change passes the ./gradlew build checks.

[sourabhaggrawal]

Hello @tuteng @eolivelli Please take a look, I will add test cases for same if changes good to you.

[shiv4289]

This is an important change for us. Pulsar manager not integrating with our SSO is a huge roadblock for pulsar manager adoption. Great work @sourabhaggrawal . Lets sprint to merge this quickly :-)

[sama8]

Sharing if relevant -> SAML Jackson :)