Add sw360 integration tests to Jenkinsfile

[neubs-bsi]

Summary of the Improvement

Depends on: #393 needs to be fixed first

We have sw360 integration tests that could be added to Jenkins to test antenna.sw360 changes.

If we add it to Jenkins we would discover little bugs like NPE earlier.

Acceptance Criteria

• SW360 integration tests are included into Jenkins
• can be turned on and off

Definition of Done

• Acceptance criteria fulfilled
• The ticket describes what has been done and describes how the results can be verified (e.g. new Jenkins step is inserted, the report can be viewed at X)
• All known limitations are listed and it is described how they will be addressed (e.g., a ticket for the remaining stuff)
• Documentation is updated
• The result has been reviewed: Everything works as described and can be verified reading only the documentation