Provide SecurityGroups attachments to machines

[eromanova]

Right now, if clusterSpec contains managedSecurityGroups:true field, two security groups will be created (one for controlplane machine and one for all the nodes), but currently they don't attach to machines.
I'd like to add automatic attachment of created controlplane and general SecurityGroups to machines.

[eromanova]

/assign

[fejta-bot]

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/lifecycle stale

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/lifecycle rotten

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/close

[k8s-ci-robot]

@fejta-bot: Closing this issue.

In response to this:

Rotten issues close after 30d of inactivity.
Reopen the issue with /reopen.
Mark the issue as fresh with /remove-lifecycle rotten.

Send feedback to sig-testing, kubernetes/test-infra and/or fejta.
/close

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