[INC-579] Integration test for suspended quotas

[jjbayer]

Sentry sends rate limits of the form

{
  "scope": "organization",
  "limit": 0,
  "reason_code": "suspended"
}

This will also rate limit metrics buckets and create outcomes for it. This led to problems in INC-579 because we assumed the new data category would not be created from Relay. Add integration test to cover this case.