Bug 14097: Fixed missing test cases

Bug 14097: Fixed missing test cases

Fixed AllowPkiAuth issue caused by 15101.
Added missing AudioAlerts

TEST PLAN
---------
1) prove -v t/db_dependent/UsageStats.t
   -- should pass after applying patch
2) Run koha qa test tools

Signed-off-by: Indranil Das Gupta (L2C2 Technologies) <indradg@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Brendan Gallagher brendan@bywatersolutions.com
(cherry picked from commit 5f71faf97185efbfad69e4f2237c9e2d38e7a812)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>