Allow configuring the number of retries for boto3

[jamin-chen]

Description of changes:

Users can configure the number of retries that boto3 will use by setting the MOSAICML_STREAMING_AWS_MAX_ATTEMPTS envvar.

Issue #, if available:

Fixes #852

Merge Checklist:

Put an x without space in the boxes that apply. If you are unsure about any checklist, please don't hesitate to ask. We are here to help! This is simply a reminder of what we are going to look for before merging your pull request.

General

• I have read the contributor guidelines
• This is a documentation change or typo fix. If so, skip the rest of this checklist.
• I certify that the changes I am introducing will be backward compatible, and I have discussed concerns about this, if any, with the MosaicML team.
• I have updated any necessary documentation, including README and API docs (if appropriate).

Tests

• I ran pre-commit on my change. (check out the pre-commit section of prerequisites)
• I have added tests that prove my fix is effective or that my feature works (if appropriate).
• I ran the tests locally to make sure it pass. (check out testing)
• I have added unit and/or integration tests as appropriate to ensure backward compatibility of the changes.

[snarayan21]

Hey @jamin-chen , this seems fine, but does the download_retry argument to StreamingDataset not work for you? We already wrap all downloads with retry logic that uses this arg.
See

streaming/streaming/base/dataset.py

Line 249 in 32caef2

download_retry (int): Number of download re-attempts before giving up. Defaults to ``2``.

[jamin-chen]

Oh whoops I completely missed that, I'll try that out