Support mTLS for http backend

[scr-oath]

Terraform Version

Terraform v1.2.8
on darwin_arm64

Use Cases

• For an enterprise that uses an internal certificate authority to issue certs for TLS servers, allow passing cacert for http backend
• For http backends that demand client certs (mTLS - mutual TLS), allow configuration to declare the cert and key to use.

Attempted Solutions

There are other backends, which may be challenging to set up for one-off or small deployments or when there is no AWS presence - such as S3 + Dynamo

Proposal

Enable mTLS and cacert trust for mTLS with an internal signing mechanism.

References

• [fixes 31700] Add mTLS support for http backend by way of client cert & key, as well as enterprise cacert. #31699

[kmoe]

Thanks for this. This is a reasonable request and we'll review the PR when we can.

[kmoe]

Implemented in #31699

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