🌱 Log error when calling a Runtime Extension gets an error that is ignored because of failure policy

[tsuzu]

What this PR does / why we need it:

• Log an error when Lifecycle Hook Runtime Extension fails while we set Ignore as Failure Policy.
  • I want the error to be on logs even if ignored for investigation.

E0808 14:00:07.430045       1 client.go:349] "ignoring error calling extension handler because of FailurePolicy \"Ignore\"" err="http call failed: Post \"https://test-extension-webhook-service.test-extension-system.svc:443/hooks.runtime.cluster.x-k8s.io/v1alpha1/beforeclustercreate/before-cluster-create?timeout=10s\": dial tcp 10.96.93.238:443: connect: connection refused" controller="topology/cluster" controllerGroup="cluster.x-k8s.io" controllerKind="Cluster" Cluster="default/capi-quickstart" namespace="default" name="capi-quickstart" reconcileID="8dc4c6bd-f70b-4179-bc80-0df5afcfbf6c" hook="BeforeClusterCreate" extensionHandler="before-cluster-create.test-runtime-sdk-extensionconfig" hook="BeforeClusterCreate"

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):

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[k8s-ci-robot]

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[tsuzu]

/area logging

[sbueringer]

/ok-to-test

[sbueringer]

Thx!

/lgtm
/approve

[sbueringer]

/cherry-pick release-1.8

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 5131e99f5b43600bcdce40ba0dc580662435640a

[k8s-infra-cherrypick-robot]

@sbueringer: once the present PR merges, I will cherry-pick it on top of release-1.8 in a new PR and assign it to you.

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/cherry-pick release-1.8

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sbueringer

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[k8s-infra-cherrypick-robot]

@sbueringer: new pull request created: #11031

In response to this:

/cherry-pick release-1.8

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