Description of problem:
periodic-ci-openshift-multiarch-master-nightly-4.9-ocp-e2e-compact-remote-libvirt-ppc64le job is failing frequently with the following test

[sig-instrumentation][Late] Alerts shouldn't report any alerts in firing or pending state apart from Watchdog and AlertmanagerReceiversNotConfigured and have no gaps in Watchdog firing [Skipped:Disconnected] [Suite:openshift/conformance/parallel]

There are unexpected alerts fired, "Alert TargetDown fired for 60 seconds with labels". Please see the testgrid link,
https://testgrid.k8s.io/redhat-openshift-ocp-release-4.9-informing#periodic-ci-openshift-multiarch-master-nightly-4.9-ocp-e2e-compact-remote-libvirt-ppc64le

Version-Release number of selected component (if applicable):
4.9

How reproducible:

Steps to Reproduce:
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Actual results:

Expected results:

Additional info: