Enable FIPS-140 builds

[fredericfran-gds]

It would be useful if packer is FIPS-140 compliant so that it can be used in US GOV environments.

This pull request is inspired from similar work done in: hashicorp/consul-k8s

I only tested locally on darwn arm64 m1: make release which successful compiled.

[hashicorp-cla]

All committers have signed the CLA.

[nywilken]

Hi @fredericfran-gds thanks for opening up this PR. Supporting FIPS sounds like the right thing to do but does require a little more work for supporting and testing this change in Packer. There is some prior-art at HashiCorp for supporting FIPS in other products and we would most likely want to follow the similar path. To help garner interest in FIPS support for Packer I invite you to open an issue with details around your use case so that we can use it as a basis for communication and planning.

I'm going to close this PR as it needs some additional discussion.

[github-actions]

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