TOOLSDOC-513: Added OpenShift How To "Debug"

my bad, it was associated with an 'outdated diff'.
faq.html.haml layout is really basic, so there's nothing wrong in duplicating it and just changing the 'hero-unit' content, IMO. We could have an extra parent layout with some attributes in the front-matter, but that would make the whole stack of layout bigger and more complex, IMO.