properly support the resource metrics endpoint when `PodAndContainerStatsFromCRI` is enabled and fix the related e2e tests.
Stats Provider:
- add container-level CPU and memory stats to `ListPodCPUAndMemoryStats` so the resource metrics endpoint has complete data
- add `aggregatePodSwapStats` to compute pod-level swap from container stats (CRI doesn't provide pod-level swap directly)
- add missing memory stats fields: `AvailableBytes`, `PageFaults`, and `MajorPageFaults`
- add platform-specific implementations for Linux and Windows
Tests:
- skip cAdvisor metrics test when `PodAndContainerStatsFromCRI` is enabled (cAdvisor metrics aren't available in that mode)
- fix expected metrics in `ResourceMetricsAPI` test
- `node_swap_usage_bytes` is only available with cAdvisor (need to verify!)
- Add `dumpResourceMetricsForPods` helper to log actual metric values when tests fail, making debugging easier
Signed-off-by: Davanum Srinivas <davanum@gmail.com>
914ddf4468