Add pip extra-index-url support with CodeArtifact login

[nayaverdier]

Issue #, if available: Fixes #5409

Description of changes: Add --extra-index-url option to codeartifact login when used with --tool pip.

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[codecov-commenter]

Codecov Report

Merging #5411 into develop will increase coverage by 0.00%. The diff coverage is 100.00%.

@@           Coverage Diff            @@
##           develop    #5411   +/-   ##
========================================
  Coverage    94.07%   94.07%           
========================================
  Files          190      190           
  Lines        14780    14788    +8     
========================================
+ Hits         13904    13912    +8     
  Misses         876      876           

Impacted Files	Coverage Δ
awscli/customizations/codeartifact/login.py	100.00% <100.00%> (ø)

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[roman-verbit-ai]

This is blocking wide adoption of CodeArtifact in our organization, as we are required to store ONLY private packages on CodeArtifact and use the public PyPi directly for all others. Any plans to merge this?

[shirahhoo]

+1

[david-goldb]

+1

[arareko]

Can we get this merged and released?

[jeremyjordan]

@justindho is there anything preventing this from being reviewed and merged? would love to use this flag

[ghandic]

Bump - would love to see this

[benjaminreji]

This would be super helpful in our organization, especially with existing CI/CD pipelines

[jasondamour]

@kdaily @jonjara You left comments saying this would be reviewed soon™️ 3 years ago. Whats happening? Please address ASAP, this is so simple and highly requested.

[jasondamour]

@nateprewit Sorry to ping, but I see that you can help with this :D

[tim-finnigan]

Thank you for creating this PR and for your patience. The CLI team has raised the requested changes again with the CodeArtifact team as they are the owners of this customization. They let us know that this feature request is not being prioritized at this time. There is still some debate regarding design decisions related to the changes proposed here. We decided to set this PR to Draft pending further review and discussion. But in the meantime we encourage others to continue adding upvotes (:+1: s) and use cases to the corresponding tracking issue (https://github.com/aws/aws-cli/issues/5409).

[jasondamour]

@tim-finnigan How is this outside of the jurisdiction of the CLI team? This change is purely to the CLI and how it sets up local client configuration. This doesn't change any auth flow

[tim-finnigan]

@tim-finnigan How is this outside of the jurisdiction of the CLI team? This change is purely to the CLI and how it sets up local client configuration. This doesn't change any auth flow

The CodeArtifact team owns the maintenance of their customization and its usage within the CLI, similar to how other service teams maintain other CLI customizations. While the CLI team would need to do a final review and approval of any changes, it is ultimately up to the service team as to whether they plan to prioritize something involving the customization. I'll also note that for anyone who has a support plan, I recommend reaching out through AWS Support to highlight any pain points related to this or other customizations, as that can help provide data points which could better inform the prioritization.