Track the current java_sdk_library(_import) deps

Adds some tests to track the current dependencies between
java_sdk_library, java_sdk_library_import and their child modules in
various configurations. This is in preparation for a series of changes
that will update the dependencies to ensure that the java_sdk_library
always depends on the source modules that it creates and
java_sdk_library_import always depends on the prebuilt modules that it
creates.

Comments in the tests highlight the parts that will be affected by the
follow up changes.

Bug: 159902351
Test: m nothing
Change-Id: I8eea3ac80061f5cbbc9dec201750c4b59e224b4b