Maintain transport connection through package updates

When a package is updated, existing bindings to that package's
services are severed and must be manually re-established.  Now
that the transport can be updated outside the system per se,
make sure that we detect these cases and rebind as needed.

Bug 16139912

Change-Id: I5d6fa75bb86484f8f7d4f8e93c9157773995e6a7