busybox: Replace most busybox utils with full tools

Replace core-base-utils with the packagegroup that provides the full tools instead. This patch exchanges them with the full packages accoriding to poky's local.conf.extended.sample for the guf-distro. But added busybox to packagegroup-guf-small explicitly as there are still some tools not replaced yet, currently I now from 'resize' and ping6. For fng-system the image size seems to grow too big.

BCS 746-000338

(cherry picked from commit 8fe70ac4)