In discussion, we agree as the team starts to upload all the XML files to Report Portal to track all the information needed at the moment, such as flaky results, most failed test cases, test suite duration, test case growth, etc.

This can be added to each testing job in Jenkins using a new script that allows to us upload of the files, more information about how to upload files using a script is here: https://docs.engineering.redhat.com/pages/viewpage.action?pageId=239690733

It's not need to use any plugins, in the report portal API description page you can see all the available methods to upload, etc. all the launches in the portal: https://reportportal-ossmqe.apps.ocp-c1.prod.psi.redhat.com/ui/#api