restart iscsi on config change

hosts/servers/poseidon/shares.nix

@@ -56,6 +56,14 @@ in {
     device = "/Velaris/Containers";
     options = [ "bind" ];
   };
+
+  systemd.services.iscsi-target = {
+    restartTriggers = [
+      (builtins.attrNames config.services.target.config)
+    ];
+    stopIfChanged = false;
+  };
+
   services = {
     nfs.server = {
       enable = true;