[controller-utils] Improve service policy circuit breaker error

The error thrown when the service policy circuit breaks is not expressive enough. The error does not indicate which service failed.

We should augment the error (e.g. catch and re-throw) to include some identifying information about the service. For example, in the case of the RPC service we should include the RPC hostname or network config ID.

The issue points to the controller-utils service-policy circuit-breaker error path; start there and trace the RPC service context available when it fails. Check how the RPC hostname or network config ID can identify the service, then verify that the resulting error distinguishes the failed service and that coverage exists for the changed behavior.

Written by the indexing model from the issue text.