Backport of chor: change cluster name param to have datacenter.name as default value into release/1.18.x #20652
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Backport
This PR is auto-generated from #20644 to be assessed for backporting due to the inclusion of the label backport/1.18.
The below text is copied from the body of the original PR.
Description
rethink on default value for cluster name on linking.
With the pr it is set to datacenter name
Attention to link ⬇️
Testing & Reproduction steps
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