rootfs: add back coreutils to mariner's image (#48)

Useful for debugging.

Signed-off-by: Dan Mihai <[email protected]>

Author: danmihai1

tools/osbuilder/rootfs-builder/cbl-mariner/rootfs_lib.sh

@@ -30,7 +30,6 @@ build_rootfs()
 		"bridge-utils" \
 		"bzip2" \
 		"chkconfig" \
-		"coreutils" \
 		"cracklib-dicts" \
 		"curl" \
 		"curl-libs" \