Merge pull request ceph#64310 from phlogistonjohn/jjm-smb-remotectl-prefactor

mgr/smb: general refactoring with the intent of making future additions easier

Reviewed-by: Adam King <[email protected]>
Reviewed-by: Anoop C S <[email protected]>
Reviewed-by: Avan Thakkar <[email protected]>

Author: adk3798