Backport of Dynamically create jwks clusters for jwt providers into release/1.16.x

[hc-github-team-consul-core]

Backport

This PR is auto-generated from #17944 to be assessed for backporting due to the inclusion of the label backport/1.16.

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

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Description

• 1/n PRs to improve jwks clusters for jwt providers authentication with intention
• This PR allows us to create a cluster per jwt-config entry. Prior to this, the envoy config would fail with the following message: failed: [cluster = jwks_cluster] is not configured
• The cluster has more configuration like certs and other entries that we can expose. We will be exposing them as part of a follow up PR.

Testing & Reproduction steps

• create a jwt provider that has a remote JWKS
• write an intention referencing that jwt provider
• make a request without a jwt (this request should fail with Jwt is missing% )
• make a request with a correct jwt (this should be successful)

PR Checklist

• Follow up PRs with config entry changes and fixing the todos

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Overview of commits

• f3adf49

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

Auto approved Consul Bot automated PR