Merge "Don't update full buckets unless metric has alerts" am: 79cf929214

Original change: https://android-review.googlesource.com/c/platform/packages/modules/StatsD/+/2070312

Change-Id: I853f018e13265b29666821aa585efb01a51d12d4
Ignore-AOSP-First: this is an automerge
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>