PR #3460: Specify GCP compute project in BigQuery Pusher executor

[copybara-service]

PR #3460: Specify GCP compute project in BigQuery Pusher executor

Please approve this CL. It will be submitted automatically, and its GitHub pull request will be marked as merged.

Imported from GitHub PR #3460

Problem: We (Twitter) typically use two different GCP projects when working with BigQuery: one for compute (where the query is executed) and one for storage (where the table is located). With the current BigQuery Pusher executor, we have to use bigquery_serving_args[_PROJECT_ID_KEY] for both compute and storage, so our jobs fail due to permissions issues.

Proposed solution: Add support for specifying a compute project id that is different from the storage project id. It would be nice to have such a change backported to a 0.26.x version.

Copybara import of the project:

• 5f865c2 specify GCP compute project in BigQuery Pusher executor by Suzen Fylke sfylke@twitter.com
• 75a55a4 Merge branch 'codesue/specify-gcp-project-bq-pusher' of h... by Suzen Fylke sfylke@twitter.com
• 8a7e43f Merge 06381ef into 04ec0... by Suzen Fylke codesue@users.noreply.github.com

COPYBARA_INTEGRATE_REVIEW=#3460 from codesue:codesue/specify-gcp-project-bq-pusher 06381ef

[google-cla]

All (the pull request submitter and all commit authors) CLAs are signed, but one or more commits were authored or co-authored by someone other than the pull request submitter.

We need to confirm that all authors are ok with their commits being contributed to this project. Please have them confirm that by leaving a comment that contains only @googlebot I consent. in this pull request.

Note to project maintainer: There may be cases where the author cannot leave a comment, or the comment is not properly detected as consent. In those cases, you can manually confirm consent of the commit author(s), and set the cla label to yes (if enabled on your project).

ℹ️ Googlers: Go here for more info.

[google-cla]

All (the pull request submitter and all commit authors) CLAs are signed, but one or more commits were authored or co-authored by someone other than the pull request submitter.

We need to confirm that all authors are ok with their commits being contributed to this project. Please have them confirm that by leaving a comment that contains only @googlebot I consent. in this pull request.

Note to project maintainer: There may be cases where the author cannot leave a comment, or the comment is not properly detected as consent. In those cases, you can manually confirm consent of the commit author(s), and set the cla label to yes (if enabled on your project).

ℹ️ Googlers: Go here for more info.