Force sampling to always take all ops for the same package.

Bug:167579006

Test: manually verified
Change-Id: I3d86ec5fc8ad7ff5c6042caa7265647722bc62ac

services/core/java/com/android/server/stats/pull/StatsPullAtomService.java

@@ -3164,9 +3164,7 @@ public class StatsPullAtomService extends SystemService {
             mAttributionTag = attributionTag;
             mUid = uid;
             mOp = op;
-            mHash = ((op.getOpCode() * 961
-                    + (attributionTag == null ? 0 : attributionTag.hashCode()) * 31
-                    + packageName.hashCode() + RANDOM_SEED) & 0x7fffffff) % 100;
+            mHash = ((packageName.hashCode() + RANDOM_SEED) & 0x7fffffff) % 100;
         }
     }