[system_metrics] Add ARCH field to fuchsia_uptime

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

Bug: 45933
Change-Id: I21d48e0e1d32a60a15b620e3992026a17308c53c
1 file changed
tree: 3ba7d2e0b93b08595fe62040803b67533d1395f6
  1. cobalt_internal/
  2. fuchsia/
  3. .gitignore
  4. BUILD.gn
  5. check.py
  6. OWNERS
  7. projects.yaml