AzureMachinePool should not start a new rollout if tags have changed

[devigned]

/kind bug

[Before submitting an issue, have you checked the Troubleshooting Guide?]

What steps did you take and what happened: If a user were to update tags on an AzureMachinePool resource, it will trigger a redeploy. The AzureMachinePool currently recognizes changes to tags to be a change in the AzureMachinePool model. With default configuration, when a model change is encountered, the AzureMachinePool will surge by 1, then delete existing machines one by one until the latest model is applied to each AzureMachinePoolMachine.

What did you expect to happen: If tags are updated on the AzureMachinePool, then only the tags should be updated on the VMSS and no model update and rollout should occur.

[devigned]

/assign

[CecileRobertMichon]

could we leverage the tags update at scope service for this? Perhaps build on top of https://github.com/kubernetes-sigs/cluster-api-provider-azure/pull/1721 once it's merged

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/lifecycle stale

[jsturtevant]

/remove-lifecycle stale

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/lifecycle stale

[shysank]

/remove-lifecycle stale

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/lifecycle stale

[jackfrancis]

/remove-lifecycle stale

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[jackfrancis]

/remove-lifecycle stale

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/lifecycle rotten

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/close not-planned

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue, marking it as "Not Planned".

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/close not-planned

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