Fix libprivilege-control nosmack tests

Fix libprivilege-control nosmack tests

[Issue#]        SSDWSSP-581
[Bug]           Many of libprivilege tests fail on nosmack kernel
[Cause]         The test cases are not adjusted to the new version of
                libprivilege.
[Solution]      Don't use deprecated APP_TYPE_OTHER; use DB_BEGIN,
                DB_END, perm_app_install, where it is expected; don't
                check SMACK_RULES_DIR dir while it is not used amymore.
[Verification]  Build, install (with new libprivilege) and check on
                smack and no-smack version of kernel.

Change-Id: I8bbf53857c9f1b69a0f40e606c0e9fe795ab0ba2