utests: don't write info to real stdout/stderr
utests: don't write info to real stdout/stderr

fiuba08/robotframework,ldtri0209/robotframework,fiuba08/robotframework,fiuba08/robotframework,waldenner/robotframework,ldtri0209/robotframework,waldenner/robotframework,fiuba08/robotframework,fiuba08/robotframework,ldtri0209/robotframework,waldenner/robotframework,ldtri0209/robotframework,waldenner/robotframework,waldenner/robotframework,ldtri0209/robotframework