5316 allow smbadm join to use RPC
Reviewed by: Bayard Bell <bayard.bell@nexenta.com>
Reviewed by: Dan McDonald <danmcd@nexenta.com>
Reviewed by: Thomas Keiser <thomas.keiser@nexenta.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Author: Gordon Ross <gwr@nexenta.com>

illumos/illumos-gate@1ed6b69a5ca1ca3ee5e9a4931f74e2237c7e1c9f