After the recent security correction concerning jelly views/pages, the RSS feeds pages were twice reported as bugged in two different regression tickets: JENKINS-58595 and JENKINS-59167. In order to reduce this risk in the future (still hoping we covered all the cases now), it will be preferable to improve the code coverage for that feature, especially because it's close to zero before the introduction of #4188.

Thank you "Hoss Man" for the feedback about the lack of this ticket, leading to confusion and lost of time.