MINOR - FQN encoding in ometa_api, TestSuite pipeline creation & serialization of test case results

[pmbrull]

Describe your changes:

Fixes

Solving three issues:

1. We were not encoding the FQN in some places in the ometa_api Mixins. This made the ingestion pipeline status update fail in the client
2. Pandas validator might return numpy types (e.g., for the df[col].count() test) for the passed/failed rows, which cannot be automatically serialized. The types should be int, so we're ensuring the cast there. I'd rather cast it generally than missing some test.
3. If we tried to run a YAML passing an Ingestion Pipeline that was not yet created in the UI, the creation logic failed, since we were not properly referencing the TestSuite service type

Type of change:

• Bug fix
• Improvement
• New feature
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation

Checklist:

• I have read the CONTRIBUTING document.
• My PR title is Fixes <issue-number>: <short explanation>
• I have commented on my code, particularly in hard-to-understand areas.
• For JSON Schema changes: I updated the migration scripts or explained why it is not needed.

[pmbrull]

adding the file in a directory to test the encoding properly

[github-actions]

The Python checkstyle failed.

Please run make py_format and py_format_check in the root of your repository and commit the changes to this PR.
You can also use pre-commit to automate the Python code formatting.

You can install the pre-commit hooks with make install_test precommit_install.

[sonarqubecloud]

Quality Gate passed for 'open-metadata-ingestion'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
93.8% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud