feat(OAuth2): Remove deprecated OAuth2 annotation. Instead Use Java DSL way of OAuth2

[rahul-chekuri]

Oauth configuration properties are changed for new java way of dsl.

Old Config Properties:

security:
  authn:
    oauth2:
      enabled: true
      client:
        clientId: <client-id>
        clientSecret: <client-secret>
        accessTokenUri: https://www.googleapis.com/oauth2/v4/token
        userAuthorizationUri: https://accounts.google.com/o/oauth2/v2/auth
        scope: profile email
      userInfoRequirements:
        hd: <domain>
      resource:
        userInfoUri: https://www.googleapis.com/oauth2/v3/userinfo
      userInfoMapping:
        email: email
        firstName: given_name
        lastName: family_name
      provider: GOOGLE

New Config Properties:

Google:

spring:
  security:
    oauth2:
      client:
        registration:
          google:
            client-id: <client-id>
            client-secret: <client-secret>
            authorization-grant-type: authorization_code
            redirect-uri: "https://<your-domain>/login/oauth2/code/google"
            scope: profile,email,openid
            client-name: google
        provider:
          google:
            authorization-uri: https://accounts.google.com/o/oauth2/auth
            token-uri: https://oauth2.googleapis.com/token
            user-info-uri: https://www.googleapis.com/oauth2/v3/userinfo
            user-name-attribute: sub

Github:

spring:
  security:
    oauth2:
      client:
        registration:
          userInfoMapping:
            email: email
            firstName: ''
            lastName: name
            username: login
          github:
            client-id: <client-id>
            client-secret: <client-secret>
            authorization-grant-type: authorization_code
            redirect-uri: "https://<your-domain>/login/oauth2/code/github"
            scope: user,email
            client-name: github
        provider:
          github:
            authorization-uri: https://github.com/login/oauth/authorize
            token-uri: https://github.com/login/oauth/access_token
            user-info-uri: https://api.github.com/user
            user-name-attribute: login

[dbyron-sf]

Looks like there are some config property changes here, so I'd say this is a feature, not a refactor. Please also describe old and new params in the commit message + PR description.

[rahul-chekuri]

Looks like there are some config property changes here, so I'd say this is a feature, not a refactor. Please also describe old and new params in the commit message + PR description.

@dbyron-sf updated the description and commit message with config properties. Please take a look :)