[AIRFLOW-1816] Add missing region param to Dataproc{Pig,Hive,SparkSql}Operators

[DanSedov]

Dear Airflow maintainers,

Please accept this PR. I understand that it will not be reviewed until I have checked off all the steps below!

JIRA

• My PR addresses the following [Airflow JIRA]
  • https://issues.apache.org/jira/browse/AIRFLOW-1816

Description

• Here are some details about my PR, including screenshots of any UI changes:
  Add missing region param to Dataproc{Pig,Hive,SparkSql}Operators

Tests

• My PR adds the following unit tests OR does not need testing for this extremely good reason:

Commits

• My commits all reference JIRA issues in their subject lines, and I have squashed multiple commits if they address the same issue. In addition, my commits follow the guidelines from "How to write a good git commit message":
  1. Subject is separated from body by a blank line
  2. Subject is limited to 50 characters
  3. Subject does not end with a period
  4. Subject uses the imperative mood ("add", not "adding")
  5. Body wraps at 72 characters
  6. Body explains "what" and "why", not "how"

[Fokko]

Could you please rewrite the commit message, please refer to the rules in the PR template.

[DanSedov]

Done

[codecov-io]

Codecov Report

Merging #2788 into master will increase coverage by 0.1%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master    #2788     +/-   ##
=========================================
+ Coverage   73.36%   73.46%   +0.1%     
=========================================
  Files         157      157             
  Lines       11935    11935             
=========================================
+ Hits         8756     8768     +12     
+ Misses       3179     3167     -12

Impacted Files	Coverage Δ
airflow/jobs.py	79.67% <0%> (+0.44%)	⬆️
airflow/executors/dask_executor.py	81.39% <0%> (+2.32%)	⬆️
airflow/utils/helpers.py	56.32% <0%> (+2.87%)	⬆️
airflow/task_runner/bash_task_runner.py	100% <0%> (+6.66%)	⬆️

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[criccomini]

LGTM