StorageSelector: alow to use new target option

Useful for clone API to restrict storage list.

www/manager/form/StorageSelector.js

@@ -2,26 +2,53 @@ Ext.define('PVE.form.StorageSelector', {
     extend: 'PVE.form.ComboGrid',
     alias: ['widget.PVE.form.StorageSelector'],
 
-    setNodename: function(nodename) {
+    reloadStorageList: function() {
 	var me = this;
-
-	if (!nodename || (me.nodename === nodename)) {
+	if (!me.nodename) {
 	    return;
 	}
 
-	me.nodename = nodename;
-
+	var params = {};
 	var url = '/api2/json/nodes/' + me.nodename + '/storage';
 	if (me.storageContent) {
-	    url += '?content=' + me.storageContent;
+	    params.content = me.storageContent;
+	}
+	if (me.targetNode) {
+	    params.target = me.targetNode;
+	    params.enabled = 1; // skip disabled storages
 	}
-
 	me.store.setProxy({
 	    type: 'pve',
-	    url: url
+	    url: url,
+	    extraParams: params
 	});
 
 	me.store.load();
+ 
+    },
+
+    setTargetNode: function(targetNode) {
+	var me = this;
+
+	if (!targetNode || (me.targetNode === targetNode)) {
+	    return;
+	}
+
+	me.targetNode = targetNode;
+
+	me.reloadStorageList();
+    },
+
+    setNodename: function(nodename) {
+	var me = this;
+
+	if (!nodename || (me.nodename === nodename)) {
+	    return;
+	}
+
+	me.nodename = nodename;
+
+	me.reloadStorageList();
     },
 
     initComponent: function() {

www/manager/qemu/Clone.js

@@ -204,6 +204,10 @@ Ext.define('PVE.window.Clone', {
 
 	});
 
+	me.targetSel.on('change', function(f, value) {
+	    me.hdstoragesel.setTargetNode(value);
+	});
+
 	me.formatsel = Ext.create('PVE.form.DiskFormatSelector', {
 	    name: 'diskformat',
 	    fieldLabel: gettext('Format'),