WINC-1968: [ote] Fix OCP-73752 network metric assertion

[rrasouli]

Summary

Fixes OCP-73752 OTE test that fails 100% of the time in CI with "Timed out waiting for metric pod:network_receive_bytes_total:sum" after 5 minutes of polling.

Root Cause

The recording rule pod:network_receive_bytes_total:sum does not produce results for the WMCO operator pod because it is a Linux control-plane pod, not a Windows workload pod. The original OTP test only verifies the Prometheus query executes successfully (status=success) without asserting the metric value is non-empty. PR #4429 made the test stricter than the original by adding a non-empty assertion inside a poll loop, which caused the test to time out every run.

Fix

Revert to the original OTP behavior: query Prometheus, assert no error, log the value. Do not require the value to be non-empty.

Testing

• Compiles and passes gofmt
• Matches the original OTP test behavior at openshift-tests-private/test/extended/winc/winc.go

[openshift-ci-robot]

@rrasouli: This pull request references WINC-1968 which is a valid jira issue.

Details

In response to this:

The OCP-73752 test was failing because it required non-empty metric values from pod:network_receive_bytes_total:sum, but this recording rule does not always produce results for the WMCO operator pod (a Linux control-plane pod). The original OTP test only verifies the Prometheus query succeeds without asserting the value is non-empty.

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: rrasouli

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[rrasouli]

/hold

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