Before the addition of GetAllocatableResources, the
podresources API had just one endpoint `List()`, thus we could just
account for the total of the calls to have a good pulse of the API usage.
Now that we extend the API with more endpoints
(`GetAlloctableResources`), in order to improve the observability we add
per-endpoint counters, in addition to the existing counter of the total
API calls.
Signed-off-by: Francesco Romani <fromani@redhat.com>
1e7bb20c52