Reduce jacoco blacklist for libcore to the bare minimum.

Bug: 64836607
Test: `cts-tradefed run cts-dev -m CtsLibcoreTestCases --test-arg com.android.compatibility.testtype.LibcoreTest:coverage:true` on a build with EMMA_INSTRUMENT=true and EMMA_INSTRUMENT_FRAMEWORK=true

Change-Id: Iefa49f49709d5182211a872845b9def6b7bae18a
diff --git a/JavaLibrary.bp b/JavaLibrary.bp
index d9f1481..401d056 100644
--- a/JavaLibrary.bp
+++ b/JavaLibrary.bp
@@ -104,9 +104,17 @@
     },
     jacoco: {
         exclude_filter: [
-            "java.lang.**",
+            "java.lang.Class",
+            "java.lang.Long",
+            "java.lang.Number",
+            "java.lang.Object",
+            "java.lang.String",
+            "java.lang.invoke.MethodHandle",
+            "java.lang.ref.Reference",
+            "java.lang.reflect.Proxy",
             "java.util.AbstractMap",
-            "java.util.HashMap*", // use * to include all nested classes
+            "java.util.HashMap",
+            "java.util.HashMap$Node",
             "java.util.Map",
         ],
     },