Merge "Add FieldsFilter to EventMetric" into main am: 084c7f1ad7

Original change: https://android-review.googlesource.com/c/platform/packages/modules/StatsD/+/3520712

Change-Id: Id6612ffd17e7eab961116b5aedf32df277d6feff
Signed-off-by: Automerger Merge Worker <[email protected]>