Check integrity after partial policy set

Check integrity after partial policy set

cynara_admin_set_policy() API function sets whole collection of policies
in single call. Setting some of them may fail. In such case no policies
should be applied to cynara service.

This test confirms existance of detected bug. Try to set 2 policies
(one good and one that is not allowed) leads to setPolicies() error,
however 1st policy remains in cynara's storage.

Verification: until bug is fixed in cynara's storage test should fail.

Change-Id: I3449ccbcfacb03bdcdc7a5cfb4a3b639d9b694ce