Instrument the java_sdk_library implementation library

Bug: 159241638
Test: build jacoco-report-classes-all.jar with and without
      prebuilt for framework-tethering. Ensure it contains the
      jacoco-report-classes.jar for framework-tethering.
Change-Id: I8183bd9613dfaf0ded5f9ac36567d5d29a8941e8