[system_metrics] Add ARCH field to more metrics

Save the ARCH field of system_profile, so that we can write queries that
split a product by architecture.

This change adds the ARCH field to fuchsia_up_ping and
fuchsia_lifetime_events.

Bug: 45933
Change-Id: Ibd285fa1b86a25d5d8e7f0520ccf3628e8998263
1 file changed
tree: 8938e441bb2cc3f14f89fc9e75cf9491b5948ea9
  1. cobalt_internal/
  2. fuchsia/
  3. .gitignore
  4. BUILD.gn
  5. check.py
  6. OWNERS
  7. projects.yaml