The tests are in the .updater packate to make them easier to run as
a suite in Android Studio. Now the package can be right clicked and
ran to run all the tests to do with updating.
The index jar files were updated so as to include info in most
metadata fields (e.g. URLs/descriptions/summary/etc) to show that
that particular part of metadata came from a specific repo. This
will allow more specific tests to show that we can indeed query for
an app with metadata provided by the repo with the highest priority.
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