The reimplementation make both complaint with ERP5LoginUserManager

  Include custom ERP5Type_asSecurityGroupId (Required for Computer and Software Instance usage of user_id)
  machine_login was renamed to external_login to be complaint with ERP5LoginUserManager

  On SlapOSShadowAuthenticationPlugin, the enumerateUsers contains a huge copied code from
       ERP5LoginUserManager, which could be be factoried in a sense in future.

  Update related tests and code to:

   - Add ERP5 Login in person, Computer and Software Instance
   - Set user id while create or clone objects
   - Update ROLES and logins (for tests) to use User ID instead reference.
   - Login is defined by ERP5 Login and not by object reference.