Revert metrics flush interval change. (#193)
Revert metrics flush interval change. (#193)

The bulk of the volume should've been reduced by the removal of metrics.
Changing the intervals here may mess up our dashboards.
google/clusterfuzz,google/clusterfuzz,google/clusterfuzz,google/clusterfuzz,google/clusterfuzz,google/clusterfuzz,google/clusterfuzz,google/clusterfuzz