Update all plugins.qmltypes files

Task-number: QTBUG-31388
Change-Id: Ia65490a262417f98fe69a89637ec2f9e7c0d0095
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>