Add batch_id param to profile to pass along with dataproc_v1.CreateBatchRequest

[nickozilla]

resolves #671

Description

This PR enables an optional profile parameter batch_id which gets passed into the dataproc_v1.CreateBatchRequest, so users can give their batch jobs a name.

Checklist

• I have read the contributing guide and understand what's expected of me
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• I have run this code in development and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
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[nickozilla]

Tested locally:

[colin-rogers-dbt]

Can you update the credentials fixtures we use to test to include this new parameter? https://github.com/dbt-labs/dbt-bigquery/blob/main/tests/conftest.py#L35

[nickozilla]

Sure thing, added in latest commit @colin-rogers-dbt

[mikealfare]

Please update the test environment template as well: https://github.com/dbt-labs/dbt-bigquery/blob/main/test.env.example. Otherwise it looks good.

[nickozilla]

Thanks for the suggestion, added in latest commit @mikealfare