filter out instances in different vpc networks

[tyuchn]

trafficstars

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind api-change kind bug /kind cleanup /kind design /kind documentation /kind failing-test /kind feature /kind flake

What this PR does / why we need it: filter out instances in different vpc networks at ip reservation step Which issue(s) this PR fixes:

Fixes #b/244645541

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

N/A

[k8s-ci-robot]

Hi @tyuchn. 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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[saikat-royc]

/ok-to-test

[saikat-royc]

Please ensure to test the PR manually (if not already done)

[saikat-royc]

Can you also add some unit test for this?

[saikat-royc]

Overall change LGTM

[tyuchn]

Can you also add some unit test for this?

Done

[leiyiz]

/lgtm /approval

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: leiyiz, tyuchn

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