fixed locale path in spec file

according to Radek, dnf in CI can not be build ("error: File not found by glob: /builddir/build/BUILDROOT/dnf-0.4.18-99.560.20140317git87f840a.fc20.x86_64/usr/share/locale/*/LC_MESSAGES/dnf.mo"). This could maybe fix this. This and previous version can be build and run on my local machine with no problems. Otherwise it could be with jenkins environment settings.