PROXY: Use the fqname when converting to lowercase
When saving the user there is a comparison between the "cased alias"
and the "lowercase password name". However, the first doesn't use fully
qualified name while the second does, resulting in a not expected
override of the "nameAlias" attribute of a stored user when trying to
authenticate more than once using an alias.
Signed-off-by: Fabiano Fidêncio <email@example.com>
Reviewed-by: Lukáš Slebodník <firstname.lastname@example.org>