Fix set privilege tests for OSP and EFL

Fix set privilege tests for OSP and EFL

[Issue#] PSDAC-125
[Bug] Imporper tests for perm_app_set_privilege
[Cause] App type for OSP should be "tpk" inseatd of NULL.
No test for EFL type of application.
[Solution] Changed app type for OSP and added perm_app_set_privilege
tests for EFL.
[Verification] Build. Run libprivilege tests. One test more should be
run and no more tests should fail.

Change-Id: I366368e4ba3ef5e9389ed15abd0fd056b937015b