[release-1.8] 🌱 Add dry-run CreateOrUpdate call in clusterctl upgrade e2e tests

[k8s-infra-cherrypick-robot]

This is an automated cherry-pick of #11349

/assign cahillsf

[cahillsf]

/area e2e-testing

[chrischdi]

/test help

[k8s-ci-robot]

@chrischdi: The specified target(s) for /test were not found.
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[chrischdi]

/test pull-cluster-api-e2e-release-1-8

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 3c1590fc109727c09c52aee46e3de0116863c2b2

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: chrischdi

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