rpm: avoid hiding errors and output in *_create_package macros

Commit b0ca7265 "rpm: avoid hiding errors from systemd commands" remove hiding errors and output
for other macros, but did not do that for %sysusers_create_package and %tmpfiles_create_package.

This change syncs their behaviour with %sysusers_create and %tmpfiles_create

Signed-off-by: Mikhail Novosyolov <m.novosyolov@rosalinux.ru>