Add a test that runs a scan for all available source types

[mirekdlugosz]

This is very similar to test_scanjob_with_multiple_sources, except test_scanjob_with_multiple_sources picks two different sources at random, and that one picks all unique sources we can find in configuration.

See quipucords PRs https://github.com/quipucords/quipucords/pull/2701 and https://github.com/quipucords/quipucords/pull/2705 for details of the issue this test is covering.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 78.33%. Comparing base (acb8a45) to head (c63a1e8).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #533 +/- ## ======================================= Coverage 78.33% 78.33% ======================================= Files 7 7 Lines 683 683 ======================================= Hits 535 535 Misses 148 148 ```

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