Merge pull request #58518 from anoopcs9/smb-mgr-updates

mgr/smb: improvements to smb mgr module and docs

Reviewed-by: Anthony D'Atri <anthonyeleven@users.noreply.github.com>
Reviewed-by: John Mulligan <jmulligan@redhat.com>

diff --cc src/pybind/mgr/smb/handler.py
Simple merge