DNS operator prone to spamming TopologyAwareHintsDisable events on GCP/Azure since May 5

The dns operator appears to have begun frequently spamming kube Events in some serial jobs across multiple clouds. (especially gcp and azure, aws is less common but there are some failures with the same signature)

The pathological events test and here it appears this started on May 5th. See the Pass Rate By NURP+ Combination panel for where this is most common.

As of the date of filing, pass rates are:
56% - gcp, amd64, sdn, ha, serial, techpreview
57% - gcp, amd64, sdn, ha, serial
60% - azure, amd64, ovn, ha, serial
60% - azure, amd64, ovn, ha, serial, techpreview

The events seem to consistently appear as follows on all clouds:

ns/openshift-dns service/dns-default hmsg/ade328ddf3 - pathological/true reason/TopologyAwareHintsDisabled Unable to allocate minimum required endpoints to each zone without exceeding overload threshold (5 endpoints, 3 zones), addressType: IPv4 From: 08:58:41Z To: 08:58:42Z

https://prow.ci.openshift.org/view/gs/origin-ci-test/logs/periodic-ci-openshift-release-master-ci-4.14-e2e-azure-sdn-techpreview-serial/1656207924667617280 (intervals)

https://prow.ci.openshift.org/view/gs/origin-ci-test/logs/periodic-ci-openshift-release-master-ci-4.14-e2e-gcp-sdn-techpreview-serial/1656207916375478272

https://prow.ci.openshift.org/view/gs/origin-ci-test/logs/periodic-ci-openshift-release-master-ci-4.14-e2e-aws-sdn-serial/1655277608981499904

The Intervals item under "Debug Tools" is a great way to see these charted in time, see the "interesting events" section.

test=[sig-arch] events should not repeat pathologically for namespace openshift-dns