tests: py: add tests for _hawkey.AdvisoryPkg type.
tests: py: add tests for _hawkey.AdvisoryPkg type.

hughsie/libhif,Conan-Kudo/libhif,hughsie/libhif,edynox/libdnf,cgwalters/libhif,cgwalters/libhif,edynox/libdnf,cgwalters/libhif,rpm-software-management/libhif,edynox/libdnf,cgwalters/libhif,Conan-Kudo/libhif,rpm-software-management/libhif,rpm-software-management/libhif,hughsie/libhif,rpm-software-management/libhif,rpm-software-management/libdnf,rpm-software-management/libdnf,Conan-Kudo/libhif,edynox/libdnf,hughsie/libhif,rpm-software-management/libdnf,rpm-software-management/libdnf,Conan-Kudo/libhif