This patch introduces a private 'API' to enable server-side OCSP responses
and implements a simple OCSP responder, tests OCSP status on a client
side (the test is pretty basic, but for now should suffice).
Change-Id: I4c6cacd4a1b949dd0ef5e6b59322fb0967d02120
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
