mail -> mailPreferredAddress
mail -> mailPreferredAddress

Per email to middleware mailing list:
> We've decided to move forward with removing the mail attribute from
> ED-Lite. In the short term both mail and mailPreferredAddress will be
> available. At some future time that that has not been chosen (measured
> in months most likely), mail will be removed.

This change was finalised 2019-08-05, and hs has been broken. this fixes
it.

mutantmonkey/hokiestalker