Build java_sdk_libraries with much less sources

This change fixes a regression that java_sdk_libraries under
frameworks/base were built with all framework sources.

Bug: 141149570
Test: m
Change-Id: Iea1d2ae20ca1c5b514a52d8b2a22e8a1d7543efd
diff --git a/Android.bp b/Android.bp
index 7241417..7577353 100644
--- a/Android.bp
+++ b/Android.bp
@@ -894,8 +894,10 @@
 
 packages_to_document = [
     "android",
+    "dalvik",
     "java",
     "javax",
+    "junit",
     "org.apache.http",
     "org.json",
     "org.w3c.dom",