bigquery: add jobRateLimitExceeded as retryable error #3795

Is your feature request related to a problem? Please describe.

With the limit of 100 concurrent jobs, we have the jobRateLimitExceeded error when we have 100s of concurrent calls to client.Query(...).Read(ctx):

googleapi: Error 400: Job exceeded rate limits: Your project_and_region exceeded quota for concurrent queries. For more information, see https://cloud.google.com/bigquery/troubleshooting-errors, jobRateLimitExceeded

Describe the solution you'd like

Since the error rateLimitExceeded is already a retryable error, we could add the error jobRateLimitExceeded to the set of retryable errors since it us very similar to rateLimitExceeded and could benefit from the backoff of gax.Backoff.

Describe alternatives you've considered

Alternatively, we could implement the retry mechanism client side and wrap the BigQuery client, however having the client automatically retry on jobRateLimitExceeded would greatly simplify the approach and avoid logic duplication.