ui: storage: Linux LIO/targetcli support

adding LIO option and dedicated "LIO target portal group" input field to the
"Add: ZFS via iSCSI" dialog

Signed-Off-By: Udo Rader <udo.rader@bestsolution.at>

www/manager6/form/iScsiProviderSelector.js

@@ -4,6 +4,7 @@ Ext.define('PVE.form.iScsiProviderSelector', {
     comboItems: [
 	['comstar', 'Comstar'],
 	[ 'istgt', 'istgt'],
-	[ 'iet', 'IET']
+	[ 'iet', 'IET'],
+	[ 'LIO', 'LIO']
     ]
 });

www/manager6/storage/ZFSEdit.js

@@ -88,6 +88,13 @@ Ext.define('PVE.storage.ZFSInputPanel', {
 		value: '',
 		fieldLabel: gettext('Host group'),
 		allowBlank: true
+	    },
+	    {
+		xtype: me.isCreate ? 'textfield' : 'displayfield',
+		name: 'lio_tpg',
+		value: '',
+		fieldLabel: gettext('LIO target portal group'),
+		allowBlank: true
 	    }
 	];