data analytics tutorial expansion project

[leahecole]

This adds the more polished code from our intern's dataproc focused expansion project. This is an expansion of this tutorial that uses a similar but slightly altered DAG and a very different (more complex) Dataproc job to run. This PR adds a directory with

• A new DAG + test
• A new Dataproc job and test
• A helper script (and test) that converts data to the format it needs to be in to run the tutorial
• The .txt file of the data (not yet processed) and the processed .csv of it
• A README that will be linked from the original tutorial with a note for users that may be interested in a more complex Dataproc job
  It also adds a line to header checker bot to ignore the license check on a text file

Checklist

• I have followed Sample Guidelines from AUTHORING_GUIDE.MD
• README is updated to include all relevant information
• Tests pass: nox -s py-3.9 (see Test Environment Setup)
• Lint pass: nox -s lint (see Test Environment Setup)
• These samples need a new API enabled in testing projects to pass (let us know which ones)
• These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• Please merge this PR for me once it is approved.
• This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample

[google-cla]

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[leahecole]

Submitted b/243976711 for CLA because override process linked from bot isn't working

[leahecole]

I've reached out to Brad to discuss if we can have this in another region. The CPU failures are flaky. Another alternative is to add a backoff for the "InvalidArgument" error

Update: Just checked docs to validate that for a standard serverless dataproc request, it wants 12 CPUs. I'll move to another region I think

[leahecole]

I enabled privateIP access on northamerica-northeast1 but it's failing - running again to see if it took time for the enable operation to complete

Update it worked!

[dandhlee]

one minor comment, otherwise LGTM!

[leahecole]

merging because snippet bot was passing previously