Fixes #37864 - API upload of deb-content fails

[m-bucher]

Actually it does not fail but worse, succeed with broken deb-package in katello due to saving the wrong pulp_href.

What are the changes introduced in this pull request?

For deb-repos we have to select the correct created_resource from pulp_task output. We already did that selection in

katello/app/lib/actions/pulp3/repository/import_upload.rb

Lines 19 to 23 in ea1b911

	if repo.deb?
	content_unit_href = input[:save_artifact_output][:pulp_tasks].last[:created_resources].find { |href| href.include?("/deb/packages") }
	else
	content_unit_href = input[:save_artifact_output][:pulp_tasks].last[:created_resources].first
	end

What are the testing steps for this pull request?

Use hammer to upload a .deb file into a repository:

hammer repository upload-content --path foo_1.0-1_all.deb --organization ACME --id 42

✔️ Tests 😅

Fixture-debs shamelessly stolen from pulp_deb 😁

[m-bucher]

Unfortunately, the tests seem to not be the fastest 🐌

I am open for suggestions on making them faster (without blowing the code up unnecessarily due to extensive mocking 😬 ).

[nadjaheitmann]

Tested the code changed and it works fine 👍

[sbernhard]

Thank you!