periodic-ci-openshift-release-master-ci-4.11-e2e-azure-techpreview-serial

is failing frequently in CI, see:
https://testgrid.k8s.io/redhat-openshift-ocp-release-4.11-informing#periodic-ci-openshift-release-master-ci-4.11-e2e-azure-techpreview-serial

Lots of techpreview 4.11 jobs have started to fail on "[sig-instrumentation][Late] Alerts shouldn't exceed the 500 series limit of total series sent via telemetry from each cluster [Skipped:Disconnected] [Suite:openshift/conformance/parallel]".

For example, https://prow.ci.openshift.org/view/gs/origin-ci-test/pr-logs/pull/openshift_cluster-capi-operator/46/pull-ci-openshift-cluster-capi-operator-main-e2e-aws-capi-techpreview/1511259398029185024. 

Snippet from the job log:

{  fail [github.com/openshift/origin/test/extended/prometheus/prometheus.go:497]: Unexpected error:
    <errors.aggregate | len:1, cap:1>: [
        {
            s: "promQL query returned unexpected results:\navg_over_time(cluster:telemetry_selected_series:count[34m51s]) >= 600\n[\n  {\n    \"metric\": {\n      \"prometheus\": \"openshift-monitoring/k8s\"\n    },\n    \"value\": [\n      1649152361.962,\n      \"606.5857142857142\"\n    ]\n  }\n]",
        },
    ]
    promQL query returned unexpected results:
    avg_over_time(cluster:telemetry_selected_series:count[34m51s]) >= 600
    [
      {
        "metric": {
          "prometheus": "openshift-monitoring/k8s"
        },
        "value": [
          1649152361.962,
          "606.5857142857142"
        ]
      }
    ]
occurred}

The test threshold is hardcoded at 600 series, we should revise the value given that more telemetry metrics are getting added over time.