[AIRFLOW-6167] Escape column name in create table in hive

[pingzh]

Hive query will fail if column name contains keyword, unless escaped.
Fix is always escaping column name when creating table.

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Jira

• My PR addresses the following Airflow Jira issues and references them in the PR title. For example, "[AIRFLOW-XXX] My Airflow PR"
  • https://issues.apache.org/jira/browse/AIRFLOW-6167
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Description

• Here are some details about my PR, including screenshots of any UI changes:
  Hive query will fail if column name contains keyword, unless escaped.
  Fix is always escaping column name when creating table.

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":
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  2. Subject is limited to 50 characters (not including Jira issue reference)
  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"

Documentation

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@KevinYang21

[KevinYang21]

LGTM, will stamp once you have a passing CI.

[codecov-io]

Codecov Report

Merging #6741 into master will decrease coverage by 0.29%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master    #6741     +/-   ##
=========================================
- Coverage   84.83%   84.53%   -0.3%     
=========================================
  Files         669      669             
  Lines       37738    37738             
=========================================
- Hits        32014    31901    -113     
- Misses       5724     5837    +113

Impacted Files	Coverage Δ
airflow/hooks/hive_hooks.py	77.6% <ø> (ø)	⬆️
airflow/kubernetes/volume_mount.py	44.44% <0%> (-55.56%)	⬇️
airflow/kubernetes/volume.py	52.94% <0%> (-47.06%)	⬇️
airflow/kubernetes/pod_launcher.py	45.25% <0%> (-46.72%)	⬇️
airflow/kubernetes/refresh_config.py	50.98% <0%> (-23.53%)	⬇️
...rflow/contrib/operators/kubernetes_pod_operator.py	78.2% <0%> (-20.52%)	⬇️
airflow/utils/dag_processing.py	87.2% <0%> (-0.39%)	⬇️
airflow/jobs/backfill_job.py	91.18% <0%> (-0.31%)	⬇️

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