move ch{own,grp}(8) and tee(1) to FreeBSD-runtime

chown and chgrp are almost essential for system management; in
particular, a lot of rc.d scripts rely on them. tee is quite
commonly used in shell scripts, and is small enough that there's
no real need for it to be in -utilities.

PR: 287014
Reviewed by: dch, manu, des, emaste
Approved by: des (mentor)
Differential Revision: https://reviews.freebsd.org/D50497