[release-0.9] 🐛 Fall back to cluster identityRef in absence of machine identityRef

[k8s-infra-cherrypick-robot]

This is an automated cherry-pick of #1768

/assign mdbooth

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: k8s-infra-cherrypick-robot Once this PR has been reviewed and has the lgtm label, please assign mdbooth for approval. For more information see the Kubernetes Code Review Process.

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Name	Link
🔨 Latest commit	013fb4ad8da7ecab77380ec4ca40907dea934f54
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[mdbooth]

/retest-required

[lentzi90]

/test pull-cluster-api-provider-openstack-e2e-test

[jichenjc]

/test pull-cluster-api-provider-openstack-e2e-test

[MaysaMacedo]

/test pull-cluster-api-provider-openstack-e2e-test

[k8s-ci-robot]

@k8s-infra-cherrypick-robot: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-cluster-api-provider-openstack-e2e-test	013fb4ad8da7ecab77380ec4ca40907dea934f54	link	true	/test pull-cluster-api-provider-openstack-e2e-test

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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