new: retry on common errors

[jriddle-linode]

📝 Description

What does this PR do and why is this change necessary?

Adding retry functionality for common random errors sent by the API

• 400: Bad Request with nginx headers
• 408: Request Timeout
• 429: Rate limit exceeded

✔️ How to Test

What are the steps to reproduce the issue or verify the changes?

How do I run the relevant unit/integration tests?

make test

[ykim-akamai]

Looks good!

[zliang-akamai]

In Python SDK we used the retry class from urllib3. Should we consider that for linode-cli as well or?

https://github.com/linode/linode_api4-python/blob/dev/linode_api4/linode_client.py#L26

[lgarber-akamai]

In Python SDK we used the retry class from urllib3. Should we consider that for linode-cli as well or?

https://github.com/linode/linode_api4-python/blob/dev/linode_api4/linode_client.py#L26

@zliang-akamai That's a great question! The biggest limitation I can think of with that approach is that it might be a good bit more complicated to implement complex retry logic (e.g. 400 NGINX errors).

I'm also not entirely sure whether urllib3 respects the Retry-After header. edit: Nevermind, looks like it does.

[lgarber-akamai]

Looks good to me! Just needs a make format run .