Azure scale: Disable host-level API availability checks

[nojnhuh]

The Azure clusters built for SIG-Scalability tests don't expose each control plane node behind a different address, only a shared public load balancer with a single IP and port. The host-level checks that are enabled by default for the APIAvailabilty CL2 test are thus failing and adding lots of noise to logs. This change disables those checks in favor of the cluster-wide one.

These changes are based on this snippet of the CL2 config:
https://github.com/kubernetes/perf-tests/blob/690e2e8bcf598bba7d773c85dc3f871719198f90/clusterloader2/testing/load/modules/measurements.yaml#L135-L147

And here where those values are used:
https://github.com/kubernetes/perf-tests/blob/690e2e8bcf598bba7d773c85dc3f871719198f90/clusterloader2/pkg/measurement/common/api_availability_measurement.go#L204

Initially these changes are only made to the presubmit jobs. Once we determine they do what we expect, we'll promote them to the periodic jobs.

/assign @jackfrancis

[jackfrancis]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jackfrancis, nojnhuh

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• config/jobs/kubernetes-sigs/cluster-api-provider-azure/OWNERS [jackfrancis,nojnhuh]
• config/jobs/kubernetes/sig-scalability/DRA/OWNERS [jackfrancis,nojnhuh]

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[k8s-ci-robot]

@nojnhuh: Updated the job-config configmap in namespace default at cluster test-infra-trusted using the following files:

• key cluster-api-provider-azure-presubmits-main.yaml using file config/jobs/kubernetes-sigs/cluster-api-provider-azure/cluster-api-provider-azure-presubmits-main.yaml
• key sig-scalability-presubmit-dra-capz.yaml using file config/jobs/kubernetes/sig-scalability/DRA/sig-scalability-presubmit-dra-capz.yaml

In response to this:

The Azure clusters built for SIG-Scalability tests don't expose each control plane node behind a different address, only a shared public load balancer with a single IP and port. The host-level checks that are enabled by default for the APIAvailabilty CL2 test are thus failing and adding lots of noise to logs. This change disables those checks in favor of the cluster-wide one.

These changes are based on this snippet of the CL2 config:
https://github.com/kubernetes/perf-tests/blob/690e2e8bcf598bba7d773c85dc3f871719198f90/clusterloader2/testing/load/modules/measurements.yaml#L135-L147

And here where those values are used:
https://github.com/kubernetes/perf-tests/blob/690e2e8bcf598bba7d773c85dc3f871719198f90/clusterloader2/pkg/measurement/common/api_availability_measurement.go#L204

Initially these changes are only made to the presubmit jobs. Once we determine they do what we expect, we'll promote them to the periodic jobs.

/assign @jackfrancis

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