Can't send PATCH request to Target with PODM API to set InitiatorIQN

When Allocating a node with remote storage there isn't a way to set the InitiatorIQN for the Target. It defaults to "ALL", which is causing a mismatch with the target Portal IPs. This is blocking MAAS from being able to deploy a remote target.

The node's remote storage target is:

root@maas-dev:~# curl -s -k -u admin:admin -X GET https://10.3.0.1:8443/redfish/v1/Services/18/Targets/83
{
  "@odata.context" : "/redfish/v1/$metadata#Services/Members/18/RemoteTargets/Members/$entity",
  "@odata.id" : "/redfish/v1/Services/18/Targets/83",
  "@odata.type" : "#RemoteTarget.1.0.0.RemoteTarget",
  "Id" : "83",
  "Name" : "iSCSI Remote Target",
  "Description" : "iSCSI Remote Target description",
  "Status" : {
    "State" : "Enabled",
    "Health" : "OK",
    "HealthRollup" : "OK"
  },
  "Type" : null,
  "Addresses" : [ {
    "iSCSI" : {
      "TargetLUN" : [ {
        "LUN" : 1,
        "LogicalDrive" : {
          "@odata.id" : "/redfish/v1/Services/18/LogicalDrives/347"
        }
      } ],
      "TargetIQN" : "iqn.io.maas:newell-test-1",
      "TargetPortalIP" : "10.1.0.100",
      "TargetPortalPort" : 3260
    }
  } ],
  "Initiator" : [ {
    "iSCSI" : {
      "InitiatorIQN" : "ALL"
    }
  } ],
  "Oem" : { },
  "Links" : {
    "Oem" : { }
  }

  "@odata.context" : "/redfish/v1/$metadata#Services/Members/18/RemoteTargets/Members/$entity",
  "@odata.id" : "/redfish/v1/Services/18/Targets/83",
  "@odata.type" : "#RemoteTarget.1.0.0.RemoteTarget",
  "Id" : "83",
  "Name" : "iSCSI Remote Target",
  "Description" : "iSCSI Remote Target description",
  "Status" : {
    "State" : "Enabled",
    "Health" : "OK",
    "HealthRollup" : "OK"
  },
  "Type" : null,
  "Addresses" : [ {
    "iSCSI" : {
      "TargetLUN" : [ {
        "LUN" : 1,
        "LogicalDrive" : {
          "@odata.id" : "/redfish/v1/Services/18/LogicalDrives/347"
        }
      } ],
      "TargetIQN" : "iqn.io.maas:newell-test-1",
      "TargetPortalIP" : "10.1.0.100",
      "TargetPortalPort" : 3260
    }
  } ],
  "Initiator" : [ {
    "iSCSI" : {
      "InitiatorIQN" : "ALL"
    }
  } ],
  "Oem" : { },
  "Links" : {
    "Oem" : { }
  }

When SSH'ing into the node after commissioning we see that the target is iqn.blvt2 instead of the expected iqn.io.maas:newell-test-1:

ubuntu@Newell-iSCSI-1:~$ sudo iscsiadm --mode discovery --op update --type sendtargets --portal 10.1.0.100
10.1.0.100:3260,1 iqn.blvt2

This is blocking nodes with remote storage from being deployed.