Transient issues in tests the verify metrics

[rhmdnd]

This error cropped up in a recent e2e test run, but it's unrelated to the dependency bump.

process_virtual_memory_bytes 1.5739904e+09
# HELP process_virtual_memory_max_bytes Maximum amount of virtual memory available in bytes.
# TYPE process_virtual_memory_max_bytes gauge
process_virtual_memory_max_bytes 1.8446744073709552e+19
# HELP promhttp_metric_handler_requests_in_flight Current number of scrapes being served.
# TYPE promhttp_metric_handler_requests_in_flight gauge
promhttp_metric_handler_requests_in_flight 1
# HELP promhttp_metric_handler_requests_total Total number of scrapes by HTTP status code.
# TYPE promhttp_metric_handler_requests_total counter
promhttp_metric_handler_requests_total{code="200"} 2
promhttp_metric_handler_requests_total{code="500"} 0
promhttp_metric_handler_requests_total{code="503"} 0
pod "metrics-test" deleted
2023/04/15 19:45:18 0
=== CONT  TestSingleScanSucceeds
    main_test.go:631: failed to assert metrics for scan test-single-scan-succeeds: unexpected metrics value
--- FAIL: TestSingleScanSucceeds (82.24s)