File _servicedata of Package vulkan-validationlayers

<servicedata>
<service name="tar_scm">
                <param name="url">https://github.com/KhronosGroup/Vulkan-ValidationLayers.git</param>
              <param name="changesrevision">a65eb0e392aca7f7e8fe7642915a7498574ac22d</param></service></servicedata>