Add more autotest

src/ksieveui/autocreatescripts/autotests/data/test-header-multilist-comment-ref.siv

+#SCRIPTNAME: Script part 0
+if header :contains [ "from", "cc" ] [ "from-foo@example.net", "pub@foo.com" ]
+{
+    discard;
+    stop;
+} 

src/ksieveui/autocreatescripts/autotests/data/test-header-multilist-comment.siv

+#SCRIPTNAME: Script part 0
+if header :contains [ "from"/*goo1*/, "cc" /*goo*/ ] [ "from-foo@example.net"/*foo1*/, "pub@foo.com"/*foo2*/ ]
+{
+    discard;
+    stop;
+} 

src/ksieveui/autocreatescripts/autotests/sieveeditorgraphicalmodewidgettest.cpp

@@ -228,6 +228,7 @@ void SieveEditorGraphicalModeWidgetTest::shouldLoadScripts_data()
     QTest::newRow("test-date1") << QStringLiteral("test-date1") << false << true;
 
     QTest::newRow("test-header-multilist") << QStringLiteral("test-header-multilist") << false << true;
+    QTest::newRow("test-header-multilist-comment") << QStringLiteral("test-header-multilist-comment") << false << true;
 }
 
 QTEST_MAIN(SieveEditorGraphicalModeWidgetTest)