Add subsection image for Virtualization inside the Tools section

[gridhead]

I am trying to introduce a new subsection with the PR developer-portal/content#394 but it cannot be merged yet as the subsection does not have a logo.

Noting that the section that I am talking about here was newly introduced by me with this pull request. Here's the log.

podman run -it --rm -p 4000:4000 -v "$PWD:/opt/developerportal/website/content:Z" quay.io/developer-portal/devel

Configuration file: /opt/developerportal/website/_config.yml
            Source: /opt/developerportal/website
       Destination: /opt/developerportal/website/_site
 Incremental build: enabled
      Generating... 
       Git authors: Generating authors...
Traceback (most recent call last):
  File "/opt/developerportal/website/rss.py", line 23, in <module>
    feedparser._HTMLSanitizer.unacceptable_elements_with_end_tag.add('<div>')
AttributeError: module 'feedparser' has no attribute '_HTMLSanitizer'
                    done in 6.125 seconds.
 Auto-regeneration: enabled for '/opt/developerportal/website'
LiveReload address: http://0.0.0.0:35729
    Server address: http://0.0.0.0:4000/
  Server running... press ctrl-c to stop.
[2021-09-08 02:14:07] ERROR `/static/logo/virtualization.png' not found.
[2021-09-08 02:14:14] ERROR `/static/logo/virtualization.png' not found.
[2021-09-08 02:14:22] ERROR `/static/logo/virtualization.png' not found.

[gridhead]

Here are some screenshots.

[jackorp]

Hmm, this is not a broken container image but a missing logo.

An image is needed, must have an open-source license, format preferably png that will have the path website/static/logo/virtualization.png, named after the subsection, after that the logo should be visible in the virtualization page.

For licenses, Fedora has a list of "good/bad" licenses which could be a good source should you be unsure if some image can be redistributed.

Please reach out if you have any further questions.