feat: Added "Scale dataplane to zero" workflow to the documentation

[jparrill]

Documented the "Scale data plane to zero" workflow to allow the customers to save money and compute time. It's mainly focussed in AWS but should be provider agnostic.

Signed-off-by: Juan Manuel Parrilla Madrid [email protected]

Which issue(s) this PR fixes
Fixes #HOSTEDCP-576

Checklist

• Subject and description added to both, commit and PR.
• Relevant issues have been referenced.
• This change includes docs.
• This change includes unit tests.

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[enxebre]

Thanks Juan! Let's please retitle the PR title and desc to remove any reference to hibernation. This is just about illustrating how scaling down and draining works.

[jparrill]

/hold

[zanetworker]

lgtm

[enxebre]

/approve
/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: enxebre, jparrill

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[jparrill]

I will create another PR for the E2E test in order to deliver the documentation

[jparrill]

/unhold

[openshift-ci]

@jparrill: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/capi-provider-agent-sanity	5f479f9	link	false	/test capi-provider-agent-sanity

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