[CHANGELOG] Add LimitRange based validation before admission

[trasc]

What type of PR is this?

/kind documentation
/kind flake

What this PR does / why we need it:

Adds a changelog entry for #612 / #613

Which issue(s) this PR fixes:

Special notes for your reviewer:

[k8s-ci-robot]

Hi @trasc. Thanks for your PR.

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[trasc]

/cc @alculquicondor

[tenzen-y]

/lgtm
/ok-to-test

[alculquicondor]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: alculquicondor, trasc

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