Bug 14111 - More t/Auth_with_shibboleth.t silencing

Bug 14111 - More t/Auth_with_shibboleth.t silencing

TEST PLAN
---------
1) Apply first patch
2) prove t/Auth_with_shibboleth.t
   -- failed?!
3) apply this patch
4) prove t/Auth_with_shibboleth.t
   -- success. *whew*
5) koha-qa test tools.

Signed-off-by: Indranil Das Gupta (L2C2 Technologies) <indradg@gmail.com>
Test remarks: Expected outcome as per test plan. No anomaly noted.

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>