test/extended/operators: Allow early KubeletMinorVersionUnsupportedNextUpgrade
test/extended/operators: Allow early KubeletMinorVersionUnsupportedNextUpgrade

Before running the post-update unpause monitor.  Without this,
4.8->4.9->4.10 jobs are updating successfully to 4.10, unpausing
compute, running the post-unpause compute-settling monitor, and
failing on [1,2]:

  : [sig-arch][Early] Managed cluster should start all core operators [Skipped:Disconnected] [Suite:openshift/conformance/parallel]	0s
  fail [github.com/onsi/ginkgo@v4.7.0-origin.0+incompatible/internal/leafnodes/runner.go:113]: Oct 17 23:28:57.284: Some cluster operators are not ready: kube-apiserver (Upgradeable=False KubeletMinorVersion_KubeletMinorVersionUnsupportedNextUpgrade: KubeletMinorVersionUpgradeable: Kubelet minor versions on nodes ip-10-0-135-91.ec2.internal, ip-10-0-168-151.ec2.internal, and ip-10-0-192-244.ec2.internal will not be supported in the next OpenShift minor version upgrade.)

With this change, that skew guard from [3] is allowed to trip early in
the suite.  But if it trips for long enough to set off alerts, we'd
still fail on that.

Personally, I'd much rather have the motivational message in the
commit, and not in the inline comment.  Folks could answer "why is
this line here?" with 'git blame ...'.  But David wanted an inline
comment [4], so that's what I've done here.

[1]: https://testgrid.k8s.io/redhat-openshift-ocp-release-4.10-informing#periodic-ci-openshift-release-master-nightly-4.10-upgrade-from-stable-4.8-e2e-aws-upgrade-paused
[2]: https://prow.ci.openshift.org/view/gs/origin-ci-test/logs/periodic-ci-openshift-release-master-nightly-4.10-upgrade-from-stable-4.8-e2e-aws-upgrade-paused/1449821870344900608
[3]: https://github.com/openshift/cluster-kube-apiserver-operator/pull/1199
[4]: https://github.com/openshift/origin/pull/26531#discussion_r732731449

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