Moves provider packages scripts to dev

[potiuk]

The change #10806 made airflow works with implicit packages
when "airflow" got imported. This is a good change, however
it has some unforeseen consequences. The 'provider_packages'
script copy all the providers code for backports in order
to refactor them to the empty "airflow" directory in
provider_packages folder. The #10806 change turned that
empty folder in 'airflow' package because it was in the
same directory as the provider_packages scripts.

Moving the scripts to dev solves this problem.

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[potiuk]

Hey @ashb -> the fix to multiple dirs broke automated import check for package provider readme preparation. I fixed it in this PR by moving the scripts to dev and adding few updates.

[github-actions]

The PR needs to run all tests because it modifies core of Airflow! Please rebase it to latest master or ask committer to re-run it!

[github-actions]

The Workflow run is cancelling this PR. It has some failed jobs matching ^Pylint$,^Static checks,^Build docs$,^Spell check docs$,^Backport packages$,^Provider packages,^Checks: Helm tests$,^Test OpenAPI*.

[github-actions]

The Workflow run is cancelling this PR. It has some failed jobs matching ^Pylint$,^Static checks,^Build docs$,^Spell check docs$,^Backport packages$,^Provider packages,^Checks: Helm tests$,^Test OpenAPI*.

[github-actions]

The Workflow run is cancelling this PR. It has some failed jobs matching ^Pylint$,^Static checks,^Build docs$,^Spell check docs$,^Backport packages$,^Provider packages,^Checks: Helm tests$,^Test OpenAPI*.

[potiuk]

This should hopefully work now. I've added missing setup.py/setup.cfg from the last readme preparation for providers (they have not been committed) and regenerated all the backport providers setup.py's to include "find_namespace_packages" changes. More changes than before so I re-requested review.

[github-actions]

The Workflow run is cancelling this PR. It has some failed jobs matching ^Pylint$,^Static checks,^Build docs$,^Spell check docs$,^Backport packages$,^Provider packages,^Checks: Helm tests$,^Test OpenAPI*.

[github-actions]

The Workflow run is cancelling this PR. It has some failed jobs matching ^Pylint$,^Static checks,^Build docs$,^Spell check docs$,^Backport packages$,^Provider packages,^Checks: Helm tests$,^Test OpenAPI*.

[potiuk]

Hey @ashb - you might want to take a second look. I actually decided that storing of those setup.py is a terrible idea and I got rid of those. The only remaining ones are READMES/CHANGES but the setup.py are generated dynamically during package generation.

[potiuk]

[github-actions]

The Workflow run is cancelling this PR. It has some failed jobs matching ^Pylint$,^Static checks,^Build docs$,^Spell check docs$,^Backport packages$,^Provider packages,^Checks: Helm tests$,^Test OpenAPI*.

[ashb]

The only remaining ones are READMES/CHANGES but the setup.py are generated dynamically during package generation.

I honestly thought that was what we were doing anyway :D Yay for deleting code.

[ashb]

Moving to dev/ is a better plan anyway, but this diff:

https://github.com/apache/airflow/pull/10806/files#diff-621ffdeb5947325a83db39df2bda320f901a362ff81b5657c301184aeed78535R81-R84

# We need to make sure we are not in the airflow checkout, otherwise it will automatically be added to the
# import path
cd /
python3 /import_all_provider_classes.py

was how I handled this before -- that cd won't be needed anymore either I don't think.

[ashb]

Nothing serious left from me -- I will likely be away from computer for most of the weekend now

[potiuk]

All fixed

[potiuk]

Rebased after @mik-laj fix to readthedocs #12161 fix fixing implicit providers namespaces for ReadTheDocs.

[potiuk]

All fixed .

[ashb]

I'll take a look at fixing my minor complaints in a future PR.

[github-actions]

The PR needs to run all tests because it modifies core of Airflow! Please rebase it to latest master or ask committer to re-run it!