Bug 13871: [QA Follow-up] Adjust Patron Status Request

Bug 13871: [QA Follow-up] Adjust Patron Status Request

Conform QA comment on Bugzilla, we do this:

[1] Attribute for overdrive mode/invalid credentials is not really needed.
    We can always pass a screen message that card or password is invalid.
[2] If the cardnumber is correct and the password is wrong, we should
    still honour the request. The bad password is recognized by BLN and
    an additional message in AF.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Verified by telnetting SIP server.
And tested additionally with the new unit test of bug 15956.

Signed-off-by: Brendan A Gallagher <brendan@bywatersolutions.com>
(cherry picked from commit a32a5c4e0843ec8e08e8c75118f648cbbfdb762c)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>