Merge topic 'cpack-dmg-sla'

9e38bfa915 CPack/DMG: Add explicit option to use CPACK_RESOURCE_FILE_LICENSE for SLA
542ba6ac1a Tests: Add CPack/DMG case covering SLA from CPACK_RESOURCE_FILE_LICENSE

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !6876