Include metadata in role documentation

[ypid]

A metadata section cloud be added to the introduction page automaticlly which consists of:

• Galaxy tags
• Link to the VCS repo
• Version
• And more goodness

[AnBuKu]

An other example, "Security":

• https://galaxy.ansible.com/list#/roles?page=1&page_size=10&tags=security&users=debops
• curl https://api.debops.org/v0/roles/debops.json | jq '.[] | select(contains({tags: ["security"]})) | (.role_owner + "." + .role_name)'

[ypid]

I just made my opening comment more generic and rethought the idea a bit. This issue should be easy to get in to using the DebOps API and Sphinx if anyone wants to play with that.

[AnBuKu]

"if anyone wants to play with that." don't be shy ;-)@ypid