Automated cherry pick of #40405

[codablock]

Cherry pick of #40405 on release-1.5.

#40405: Set NetworkInterfaces and Subnets to nil before updating

[k8s-ci-robot]

Hi @codablock. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with @k8s-bot 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.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. I understand the commands that are listed here.

[k8s-reviewable]

This change is 

[k8s-github-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

The following people have approved this PR: codablock

Needs approval from an approver in each of these OWNERS Files:

• pkg/cloudprovider/providers/azure/OWNERS

We suggest the following people:
cc @colemickens
You can indicate your approval by writing /approve in a comment
You can cancel your approval by writing /approve cancel in a comment

[luxas]

Reassigning to @colemickens and/or @brendandburns

[colemickens]

/lgtm

[luxas]

cc @saad-ali also (or who is the maintenance release czar)

[k8s-github-robot]

Automatic merge from submit-queue