Please see parent ticket for description and screenshots.
Essentially what we need here is to start tracking hosts in iSCSI.
These hosts need to be automatic (tracked when initiators connect to iscsi server) or manually entered.
How to exactly implement that will need some investigation. Likely listen to events for new iSCSI connections.
The API for associating allowing hosts to target needs to be kept backward compatible.
If this start to become too complex, we can write a NEP about this functionality.