Backport of NET-6943 - Replace usage of deprecated Envoy field envoy.config.router.v3.WeightedCluster.total_weight. into release/1.16.x

[hc-github-team-consul-core]

Backport

This PR is auto-generated from #20011 to be assessed for backporting due to the inclusion of the label backport/1.16.

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The below text is copied from the body of the original PR.

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Description

envoy has deprecated sending the total_weight.

Testing & Reproduction steps

Links

PR Checklist

• updated test coverage
• external facing docs updated
• appropriate backport labels added
• not a security concern

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Overview of commits

• 3e046a8

[hashicorp-cla]

All committers have signed the CLA.

[github-team-consul-core-pr-approver]

Auto approved Consul Bot automated PR