Don't clobber shared libs when updating app info

If we update a package without restart or if an installed
package is a target of a resource overlay we update the app
info on the applicaiton side which is then used to update
the class loader and the resources the app is loading from.
To do that we send over an app info instance for the package
which was partially populated and missing the shared lib
entries resulting in apps not finding resources and classes
from the lib.

Test: manual

bug:62685545

Change-Id: Ib40b430c85a1e5d74f270a4326497ea3bd832215