test:
[sig-instrumentation][Late] Alerts shouldn't report any alerts in firing state apart from Watchdog and AlertmanagerReceiversNotConfigured

is failing frequently in CI, see search results:
https://search.ci.openshift.org/?maxAge=168h&context=1&type=bug%2Bjunit&name=&maxMatches=5&maxBytes=20971520&groupBy=job&search=%5C%5Bsig-instrumentation%5C%5D%5C%5BLate%5C%5D+Alerts+shouldn%27t+report+any+alerts+in+firing+state+apart+from+Watchdog+and+AlertmanagerReceiversNotConfigured

Seeing a lot of failures with the queries used.
https://prow.ci.openshift.org/view/gcs/origin-ci-test/logs/release-openshift-origin-installer-e2e-remote-libvirt-image-ecosystem-ppc64le-4.8/1368381121678544896

https://prow.ci.openshift.org/view/gcs/origin-ci-test/logs/periodic-ci-openshift-release-master-nightly-4.8-e2e-gcp-rt/1368886803049746432

Test grids show that these errors have been popping up for a long time
https://testgrid.k8s.io/redhat-openshift-ocp-release-4.8-informing#release-openshift-origin-installer-e2e-remote-libvirt-image-ecosystem-ppc64le-4.8

https://testgrid.k8s.io/redhat-openshift-ocp-release-4.8-informing#periodic-ci-openshift-release-master-nightly-4.8-e2e-gcp-rt