[TECHNICAL SUPPORT] LPS-44021 Added getGroupId and setGroupId methods to the LayoutRevisionMethods list 

Hey Tamás,

This issue take cares about https://issues.liferay.com/browse/LPS-35222 when LayoutRevisions are used, as the setGroupId() method sets the Layout's groupId, instead of the LayoutRevision's which leads to NoSuchLayoutSetExceptions during import, as the groupId will remain the same (staging site's groupId), loaded from the XML file.

If you have any questions, concerns, please let me know.