MFV r275537:

Illumos issue:
   5316 allow smbadm join to use RPC

(Due to our lack of smbsrv this is mostly no-op on
FreeBSD)

MFC after:	2 weeks


git-svn-id: svn+ssh://svn.freebsd.org/base/head@275579 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Note vendor revision r275538 as merged.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@275580 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f