Add realtime container execution logs for BatchOperator

[killua1zoldyck]

closes: #31675

A new utility called AWSTaskLogFetcher has been implemented to address the common functionality shared by EcsTaskLogFetcher in EcsRunTaskOperator and for the BatchOperator for this issue.

[boring-cyborg]

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[o-nikolas]

Note that we have some other changes in flight right now touching the same code (#31824) CC @vandonr-amz

[killua1zoldyck]

I did not make any changes to the TaskLogFetcher logic. Since I had to reuse the same LogFetcher without any change I just moved it to utils/task_log_fetcher.py. Shall I wait for #31824 to get approved and merge that with my changes and update this PR?

[o-nikolas]

I did not make any changes to the TaskLogFetcher logic. Since I had to reuse the same LogFetcher without any change I just moved it to utils/task_log_fetcher.py. Shall I wait for #31824 to get approved and merge that with my changes and update this PR?

I think it's fine for everyone to proceed as normal and the second person to merge will have to rebase. I just wanted everyone to be aware of each other's changes. The behaviour of the log fetcher is changing.

[killua1zoldyck]

Ok. I will wait for any further comments/changes.

[killua1zoldyck]

I have updated the changes from #31824 @o-nikolas

[o-nikolas]

I have updated the changes from #31824 @o-nikolas

Thanks! Unfortunately there are some more conflicts due to some more logging PRs being merged

[killua1zoldyck]

I have updated the changes from #31824 @o-nikolas

Thanks! Unfortunately there are some more conflicts due to some more logging PRs being merged

I have updated the PR

[vandonr-amz]

LGTM

[boring-cyborg]

Awesome work, congrats on your first merged pull request! You are invited to check our Issue Tracker for additional contributions.