use combobox for iscsiprovider

www/manager/Makefile

@@ -54,6 +54,7 @@ JSSRC= 				                 	\
 	form/CacheTypeSelector.js			\
 	form/SnapshotSelector.js			\
 	form/ContentTypeSelector.js			\
+	form/iScsiProviderSelector.js			\
 	form/DayOfWeekSelector.js			\
 	form/BackupModeSelector.js			\
 	form/ScsiHwSelector.js				\

www/manager/form/iScsiProviderSelector.js

+Ext.define('PVE.form.iScsiProviderSelector', {
+    extend: 'PVE.form.KVComboBox',
+    alias: ['widget.pveiScsiProviderSelector'],
+  
+    initComponent: function() {
+	var me = this;
+
+	me.data = [
+	    ['comstar', 'Comstar'],
+	    [ 'istgt', 'istgt'],
+	    [ 'iet', 'IET']
+	];
+
+	me.callParent();
+    }
+});

www/manager/storage/ZFSEdit.js

@@ -81,10 +81,10 @@ Ext.define('PVE.storage.ZFSInputPanel', {
 		fieldLabel: gettext('Enable')
 	    },
 	    {
-		xtype: me.create ? 'textfield' : 'displayfield',
+		xtype: me.create ? 'pveiScsiProviderSelector' : 'displayfield',
 		name: 'iscsiprovider',
 		height: 22, // hack: set same height as text fields
-		value: 'Comstar',
+		value: 'comstar',
 		fieldLabel: gettext('iSCSI Provider'),
 		allowBlank: false
 	    },