Add slave RPM ID to assist with identifying incorrect RPM config. Signed-off-by: Benjamin Li <benl@squareup.com> Reviewed-by: Jun Nie <jun.nie@linaro.org> Link: https://lore.kernel.org/r/20210205015205.22947-2-benl@squareup.com Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>