In preparation for removing junit and android.test classes from
the Android API this change adds explicit dependencies on junit
and/or legacy-android-test to ensure that modules will compile
properly once it is removed.
Care was taken to ensure that any targets that depended,
directly or indirectly, on android-support-test did not also
depend on junit or hamcrest as they conflict with the versions
embedded within android-support-test.
Bug: 30188076
Test: make checkbuild
Change-Id: I03f7836a1081acda5ed2c6e43cb24e9dc23b944c
