Execute ExportTool as part of packaging in the PKG Jenkins

The aim is to make and keep Coin/CI as stable and simple as possible and to allow it to focus in it's main purpose. The ExportTool also consumes a lot of resources when running on vmbuilder master. One idea was to launch the ExportTool on a separate agent. But that would add even more overall complexity. Instead we can replicate needed integrations from master storage into packaging file server (persistent storage). This operation should be very fast as Coin master and files02 should reside in the same network. What is left is adapting packaging to read build artifacts from this replicated storage.