Personalize more attributes i.r.t. the uid

[Thijs Kinkhorst]

If you log in as admin or test the uid and ePPN differ but not others.

It would be much more useful and transparent in testing if the mail/name attributes would also be modified in the same way.

Example: when logging in with username thijs:

• uid = thijs
• eppn = [e-mail]
• mail = [e-mail]
• displayname/cn: Thijs Doe
• givenName: Thijs
• sn: Doe