Add iOS & Android Mac offline installer config

Provide offline installer that contains both iOS and Android packages.

Change-Id: I7014069dea20c23a16dd8dcebcc5ef451bb7d2e9
Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>
Reviewed-by: Antti Kokko <antti.kokko@digia.com>