[release-1.21] pkg/common/utils.go: update regionalLocationFmt for Europe with 10+ regions

[k8s-infra-cherrypick-robot]

This is an automated cherry-pick of #2117

/assign sunnylovestiramisu

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[k8s-ci-robot]

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[sunnylovestiramisu]

/retest-required

[sunnylovestiramisu]

/retest-required

[k8s-ci-robot]

@k8s-infra-cherrypick-robot: The following tests 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-gcp-compute-persistent-disk-csi-driver-e2e-arm	23c22b0	link	false	/test pull-gcp-compute-persistent-disk-csi-driver-e2e-arm
pull-gcp-compute-persistent-disk-csi-driver-e2e-windows-2019	23c22b0	link	false	/test pull-gcp-compute-persistent-disk-csi-driver-e2e-windows-2019
pull-gcp-compute-persistent-disk-csi-driver-e2e-windows-2022	23c22b0	link	false	/test pull-gcp-compute-persistent-disk-csi-driver-e2e-windows-2022
pull-gcp-compute-persistent-disk-csi-driver-verify	23c22b0	link	true	/test pull-gcp-compute-persistent-disk-csi-driver-verify

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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