Disconnect ISCSI Target should check for VMs on datastore before continuing.

Before disconnecting or removing an iscsi target there should be a check to validate that there are no VMs currently registered and using the datastore. This causes orphaned objects and run command failures/timeouts.

Start by locating the PowerCLI entry point that disconnects or removes an iSCSI target, then trace how its datastore and registered VMs are represented. Done means the operation checks for VMs using the datastore before continuing and prevents the orphaned-object and command-failure behavior described in the issue.

Written by the indexing model from the issue text.