Add shard ID to statsd atom for procstats collection

Without this, RANDOM_ONE_SAMPLE would result in statsd dropping all bar the
first shard. Adding the shard id as a dimension field preserves all the
data.

Bug: 158294266
Test: manual build & test
Change-Id: I94ffb610ef3651f460600e3df6b32c87fc430594
1 file changed
tree: 700ee0b39fc522a5db389ff14b5503bb9ccb6084
  1. atom_field_options.proto
  2. atoms.proto