illumos gate

Testing: It was done by hand with win10 client and omniosce as
server. The changes were tested with different values of parameters for
smbd:

smbd/max_protocol: "", "2.1", "3.02", "3.11"

smbd/encrypt: "", "disabled","enabled","required"

smbd/encrypt_cipher, "", "aes128-ccm", "aes128-gcm"

There were checked a negotiation, session setup, creation, attributes
retrieval and removing of files and directories.

Also, wireshark was used to make sure correct dialect and encryption
cipher was selected.

git commit 4e065a9f6a4471f1001853cd10a093bc5beb58a5

commit  4e065a9f6a4471f1001853cd10a093bc5beb58a5
Author: Alexander Stetsenko <alex.stetsenko@gmail.com>
Date:   2020-07-10T14:29:28.000Z

    12513 SMB 3.1.1 support for server
    Reviewed by: Matt Barden <mbarden@tintri.com>
    Reviewed by: Gordon Ross <gordon.w.ross@gmail.com>
    Approved by: Robert Mustacchi <rm@fingolfin.org>