Prepare for removal of junit and android.test classes from Android API (step 1)

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
Merged-In: Ia67b0c29bfcaf36bb1ec4e4c97f5aa5d0a0b3b22
Change-Id: Ib0f1ff24f4190e0d7b3743b984994431ac6dcc91
diff --git a/tools/cts-reference-app-lib/Android.mk b/tools/cts-reference-app-lib/Android.mk
index fae85b4..8f6039d 100644
--- a/tools/cts-reference-app-lib/Android.mk
+++ b/tools/cts-reference-app-lib/Android.mk
@@ -24,6 +24,8 @@
 # and when built explicitly put it in the data partition
 LOCAL_MODULE_PATH := $(TARGET_OUT_DATA_APPS)
 
+LOCAL_STATIC_JAVA_LIBRARIES := legacy-android-test junit
+
 LOCAL_SDK_VERSION := current
 
 LOCAL_MODULE := android.cts.refapp