[AIRFLOW-3730] Standarization use of logs mechanisms

[mik-laj]

Make sure you have checked all steps below.

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-3730
  • In case you are fixing a typo in the documentation you can prepend your commit with [AIRFLOW-XXX], code changes always need a Jira issue.

Description

Some operators did not use the logging mechanism from Airflow, but used the Python mechanism.
Some operators extend the 'LoggingMixin' class when it is not needed.
This change standardizes these changes.

Tests

I'm not introducing new changes. Only rewrites the code.

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 (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

• In case of new functionality, my PR adds documentation that describes how to use it.
  • When adding new operators/hooks/sensors, the autoclass documentation generation needs to be added.
  • All the public functions and the classes in the PR contain docstrings that explain what it does

Code Quality

• Passes flake8

[codecov-io]

Codecov Report

Merging #4556 into master will increase coverage by 1.68%.
The diff coverage is 80.76%.

@@            Coverage Diff             @@
##           master    #4556      +/-   ##
==========================================
+ Coverage   74.16%   75.85%   +1.68%     
==========================================
  Files         421      425       +4     
  Lines       27773    31940    +4167     
==========================================
+ Hits        20598    24227    +3629     
- Misses       7175     7713     +538

Impacted Files	Coverage Δ
airflow/contrib/hooks/winrm_hook.py	0% <0%> (ø)	⬆️
airflow/contrib/hooks/salesforce_hook.py	0% <0%> (ø)	⬆️
airflow/contrib/hooks/ftp_hook.py	70.55% <100%> (+10.19%)	⬆️
airflow/contrib/hooks/ssh_hook.py	87.36% <100%> (-0.14%)	⬇️
airflow/contrib/hooks/segment_hook.py	69.23% <100%> (-1.14%)	⬇️
airflow/contrib/sensors/sftp_sensor.py	100% <100%> (ø)	⬆️
airflow/contrib/hooks/redis_hook.py	100% <100%> (ø)	⬆️
airflow/contrib/hooks/jira_hook.py	82.85% <100%> (-0.48%)	⬇️
airflow/contrib/hooks/sqoop_hook.py	95.33% <100%> (-0.04%)	⬇️
airflow/contrib/hooks/databricks_hook.py	95.57% <100%> (-0.04%)	⬇️
... and 55 more

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