Backport of docs: JWT Authorization for intentions into release/1.16.x

[hc-github-team-consul-core]

Backport

This PR is auto-generated from #17643 to be assessed for backporting due to the inclusion of the label backport/1.16.

🚨

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The person who merged in the original PR is:
@boruszak
This person should manually cherry-pick the original PR into a new backport PR,
and close this one when the manual backport PR is merged in.

merge conflict error: POST https://api.github.com/repos/hashicorp/consul/merges: 409 Merge conflict []

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

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Description

As part of the Consul v1.16 release, JSON Web Tokens are now supported for additional validation in service intentions. This project creates two new pages:

• JWT Provider configuration entry reference
• Use JWT authorization with service intentions

This PR also updates the Service intentions configuration reference page with new parameters, new specifications, and a new example.

Links

• JIRA ticket
• RFC

PR Checklist

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

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Overview of commits

• 6556199 - 08204fe - 33cede6 - f6b1295 - aaccd1a - 8cdeaf2 - b06df87 - 8c3666e - 710beff - 0affa40 - 22d32da - 5950922 - 87d2c37

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

Auto approved Consul Bot automated PR