[build] Standardize docker image tarball suffixes for architectures

[jbudz]

Previously amd64 images didn't have a suffix, and arm64 images were suffixed with aarch64. This updates all references to use amd64 or arm64.

Closes #222990

[elasticmachine]

Pinging @elastic/kibana-operations (Team:Operations)

[jbudz]

buildkite test this

[elasticmachine]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 0549fcc

Failed CI Steps

• Jest Tests #18

Test Failures

• [job] [logs] Jest Tests #18 / multi select filter should render the amount of options available

Metrics [docs]

✅ unchanged

[Ikuni17]

Do you think it's worth standardizing all the artifact names not just the Docker images at this point?

[jbudz]

Do you think it's worth standardizing all the artifact names not just the Docker images at this point?

I'll leave this for @alina-bacalete. The one exception I'm aware of is aarch64 should be used by convention for rpm packages.

[alina-bacalete]

Do you think it's worth standardizing all the artifact names not just the Docker images at this point?

I'll leave this for @alina-bacalete. The one exception I'm aware of is aarch64 should be used by convention for rpm packages.

Hello! I don't have a strong opinion on standardizing all the artifact names besides the Docker images, I do believe we should strive for consistency and standard naming conventions across products, but ultimately I think this is a decision for your team to make. Thank you for raising the PR!

Please see here the related infra PR for these changes: https://github.com/elastic/infra/pull/42183 and let's sync when merging to be sure we have all the pieces in place. TIA!