Fix login server integration issues
1. /authenticate should return user_id/origin if the call to /authenticate is by the login server (Oauth2 bearer token)
2. Login server should pass user_id and/or origin for calls to /oauth/authorize and /oauth/token so that the LoginAuthenticationManager can properly follow through on the add_new=true flag.
Merge branch 'feature/fix_login_add_new' into develop
    [#72731888]
    Addendum to https://www.pivotaltracker.com/story/show/72731888
Properly use the add_new flag and coordinate origin or user_id from the login-server
Bump for new major release containing UAA/LDAP origin and approvals changes/refactoring