Secondary ranges for GCPManagedControlPlane

[cecilkootz]

What type of PR is this?
/kind feature

What this PR does / why we need it:
Allow passing the Pod.CidrBlock and Service.CidrBlock to GCPManagedControlPlane instances.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Expands #1027

Special notes for your reviewer:
Supersedes #1390

Please confirm that if this PR changes any image versions, then that's the sole change this PR makes.

TODOs:

• squashed commits
• includes documentation
• adds unit tests

Release note:

Fix a bug to support `secondyCidrBlocks` for GCPManagedControlPlane instances.

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[k8s-ci-robot]

Hi @cecilkootz. 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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[damdo]

/ok-to-test

[damdo]

/assign @salasberryfin

as you originally reviewed (#1390)

[salasberryfin]

Thanks @cecilkootz, LGTM pending CI validation.

Just a quick question: my understanding is that, if these fields are left blank, GCP will select a default range but I haven't confirmed this behavior myself. Is this correct?

[cecilkootz]

Thanks @cecilkootz, LGTM pending CI validation.

Just a quick question: my understanding is that, if these fields are left blank, GCP will select a default range but I haven't confirmed this behavior myself. Is this correct?

That's correct. Both require the use of UseIPAliases and if not set, a range will be automatically chosen with the default.

[salasberryfin]

Thanks @cecilkootz.

/lgtm

[salasberryfin]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cecilkootz, salasberryfin

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