[AIRFLOW-4204][WIP] Update super() calls

[milton0825]

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-4204

Description

• Here are some details about my PR, including screenshots of any UI changes:

Replace super(_class, self) by super()

find . -type f -name "*.py" -print0 | xargs -0 sed -i .pyc 's/super(.*, self)/super()/g'

Tests

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

Not changing any functionality so no test required.

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.
  • All the public functions and the classes in the PR contain docstrings that explain what it does
  • If you implement backwards incompatible changes, please leave a note in the Updating.md so we can assign it to a appropriate release

Code Quality

• Passes flake8

[BasPH]

This formatting looks a bit odd now, these 2 lines easily fit on a single line. Could you fix these formatting issues?

[milton0825]

Will start fixing it once #5022 is merged.

[Fokko]

Collecting flake8
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Installing collected packages: mccabe, pyflakes, pycodestyle, entrypoints, flake8
Successfully installed entrypoints-0.3 flake8-3.7.7 mccabe-0.6.1 pycodestyle-2.5.0 pyflakes-2.1.1
43.08s$ flake8
./airflow/www/views.py:2422:17: E131 continuation line unaligned for hanging indent
./airflow/www/views.py:2433:17: E131 continuation line unaligned for hanging indent
./airflow/contrib/sensors/jira_sensor.py:102:48: E127 continuation line over-indented for visual indent
./airflow/contrib/sensors/jira_sensor.py:103:48: E127 continuation line over-indented for visual indent
./airflow/contrib/sensors/jira_sensor.py:104:48: E127 continuation line over-indented for visual indent
./airflow/contrib/operators/slack_webhook_operator.py:70:52: E127 continuation line over-indented for visual indent
./airflow/contrib/operators/slack_webhook_operator.py:71:52: E127 continuation line over-indented for visual indent
./airflow/contrib/operators/sagemaker_transform_operator.py:73:58: E127 continuation line over-indented for visual indent
./airflow/contrib/operators/sagemaker_endpoint_config_operator.py:49:63: E127 continuation line over-indented for visual indent
./airflow/contrib/operators/gcs_acl_operator.py:57:78: E127 continuation line over-indented for visual indent
./airflow/contrib/operators/gcs_acl_operator.py:119:78: E127 continuation line over-indented for visual indent
./airflow/contrib/operators/sagemaker_training_operator.py:67:57: E127 continuation line over-indented for visual indent
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./airflow/contrib/operators/discord_webhook_operator.py:70:54: E127 continuation line over-indented for visual indent
./airflow/contrib/operators/discord_webhook_operator.py:71:54: E127 continuation line over-indented for visual indent
./airflow/contrib/operators/sagemaker_endpoint_operator.py:82:57: E127 continuation line over-indented for visual indent
./airflow/contrib/operators/sagemaker_tuning_operator.py:66:55: E127 continuation line over-indented for visual indent
./airflow/operators/slack_operator.py:129:52: E127 continuation line over-indented for visual indent
./tests/contrib/utils/base_gcp_system_test_case.py:129:52: E127 continuation line over-indented for visual indent
./tests/contrib/utils/base_gcp_system_test_case.py:130:52: E127 continuation line over-indented for visual indent

[Fokko]

Can you rebase onto master?