feat: Support HTTP proxies with credentials.

[jdm-square]

Fixes #2175. The addition of the Jboss logging dependency is required to avoid a missing class exception when the HTTP transport is created; it bridges the logback instance to the logging in use inside of the network-related code.

This implementation is based off of the model code in https://github.com/googleapis/google-auth-library-java#configuring-a-proxy.

Test Plan

How do we know the code works?

Following the steps described in #2175, I have validated that flank behaves the same when mitmproxy requires credentials as when it does not.

Checklist

• Documented (I don't know where this should be documented)
• Unit tested (I have no idea how this is possible)
• Integration tests updated (I don't think this is relevant?)

[github-actions]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[mergify]

Title does not follow the guidelines of Conventional Commits.
Please adjust title before merge and use one of following prefix:

• build - Changes that affect the build system or external dependencies (dependencies update)
• ci - Changes to our CI configuration files and scripts (basically directory .github/workflows)
• docs - Documentation only changes
• feat - A new feature
• fix - A bug fix
• chore - Changes which does not touch the code (ex. manual update of release notes). It will not generate release notes changes
• refactor - A code change that contains refactor
• style - Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc)
• test - Adding missing tests or correcting existing tests and also changes for our test app
• perf - A code change that improves performance (I do not think we will use it)

[mergify]

Title does not follow the guidelines of Conventional Commits.
Please adjust title before merge and use one of following prefix:

• build - Changes that affect the build system or external dependencies (dependencies update)
• ci - Changes to our CI configuration files and scripts (basically directory .github/workflows)
• docs - Documentation only changes
• feat - A new feature
• fix - A bug fix
• chore - Changes which does not touch the code (ex. manual update of release notes). It will not generate release notes changes
• refactor - A code change that contains refactor
• style - Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc)
• test - Adding missing tests or correcting existing tests and also changes for our test app
• perf - A code change that improves performance (I do not think we will use it)

[jdm-square]

I have read the CLA Document and I hereby sign the CLA

[bootstraponline]

Thanks for the contribution!

Please add a FAQ entry to https://github.com/Flank/flank/blob/master/docs/index.md that explains how to run Flank with a proxy. After that I'll merge. The code looks good.

[bootstraponline]

I found the command in the linked issue. The snapshot jar will auto update once the build passes on master.

• https://github.com/Flank/flank/releases/tag/flank-snapshot

I'll make a new stable release next week.

[bootstraponline]

https://github.com/Flank/flank/releases/tag/flank-snapshot has been updated with the feature.

[bootstraponline]

@jdm-square stable release has been published. https://github.com/Flank/flank/releases/tag/v21.11.0