Add Alerts derived rate metrics for Compute responses
The Alerts API now supports derived rate metrics for Compute response status codes when using Domain Inspector as a source. The following new metrics are available: compute_resp_status_5xx_rate, compute_resp_status_4xx_rate, compute_resp_status_gte_400_rate, compute_resp_status_lt_500_rate, compute_resp_status_4xx_excl_404_rate, and compute_resp_status_404_rate.
Prior change: Add datacenter parameter to HSAPI
