Add e2e test for multiple services disabling floating IP

[zarvd]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

close #6151

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[k8s-ci-robot]

Hi @zarvd. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[zarvd]

/kind cleanup

[MartinForReal]

/ok-to-test

[MartinForReal]

/lgtm /approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: MartinForReal, zarvd

The full list of commands accepted by this bot can be found here.

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/kubernetes-sigs/cloud-provider-azure/blob/master/OWNERS)~~ [MartinForReal] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[nilo19]

/test pull-cloud-provider-azure-e2e-ccm-ipv6-vmss-capz

[nilo19]

/test pull-cloud-provider-azure-e2e-ccm-dualstack-vmss-capz

[lzhecheng]

/lgtm