Beam does not consider BigQuery's processing location when getting query results

When using the BigQuery source with a SQL query in a pipeline, the "processing location" is not taken into consideration and the pipeline fails.

For example, consider the following which uses `BigQuerySource` to read from BigQuery using some SQL. The BigQuery dataset and tables are located in `australia-southeast1`. The query is submitted successfully ([Beam works out the processing location by examining the first table referenced in the query and sets it accordingly](https://github.com/apache/beam/blob/master/sdks/python/apache_beam/io/gcp/bigquery_tools.py#L221)), but when Beam attempts to poll for the job status after it has been submitted, it fails because it doesn't set the `location` to be `australia-southeast1`, which is required by BigQuery:

 
```

p | 'read' >> beam.io.Read(beam.io.BigQuerySource(use_standard_sql=True, query='SELECT * from `a_project_id.dataset_in_australia.table_in_australia`')
```

 
```

HttpNotFoundError: HttpError accessing :
response: <{'status': '404', 'content-length': '328', 'x-xss-protection': '1; mode=block', 'x-content-type-options':
'nosniff', 'transfer-encoding': 'chunked', 'vary': 'Origin, X-Origin, Referer', 'server': 'ESF', '-content-encoding':
'gzip', 'cache-control': 'private', 'date': 'Tue, 26 Mar 2019 03:11:32 GMT', 'x-frame-options': 'SAMEORIGIN',
'alt-svc': 'quic=":443"; ma=2592000; v="46,44,43,39"', 'content-type': 'application/json; charset=UTF-8'}>,
content <{
  "error": {
    "code": 404,
    "message": "Not found: Job a_project_id:5ad9cc803baa432290b6cd0203f556d9",
   
"errors": [
      {
        "message": "Not found: Job a_project_id:5ad9cc803baa432290b6cd0203f556d9",
       
"domain": "global",
        "reason": "notFound"
      }
    ],
    "status": "NOT_FOUND"
  }
}

```

The problem can be seen/found here:

[https://github.com/apache/beam/blob/v2.11.0/sdks/python/apache_beam/io/gcp/bigquery_tools.py#L571](https://github.com/apache/beam/blob/v2.11.0/sdks/python/apache_beam/io/gcp/bigquery_tools.py#L571)

[https://github.com/apache/beam/blob/master/sdks/python/apache_beam/io/gcp/bigquery_tools.py#L357](https://github.com/apache/beam/blob/master/sdks/python/apache_beam/io/gcp/bigquery_tools.py#L357)

The location of the job (in this case `australia-southeast1`) needs to set/inferred (or exposed via the API), otherwise its fails.

 For reference, Airflow had the same bug/problem: [https://github.com/apache/airflow/pull/4695](https://github.com/apache/airflow/pull/4695)

Imported from Jira [BEAM-6910](https://issues.apache.org/jira/browse/BEAM-6910). Original Jira may contain additional context.
Reported by: polleyg.