This reverts commit fdd0b5b58f0ebd39ad05e2dcb17faa6603145f97.

As the role now functions as a gateway and not just a wireguard gateway
it's better name for clarity

The testing was failing because the use of the example files with the
same domain names, resulted in the files and the molecule variable were
being merged and therefore running tasks that would fail on test
(example, setting a fake VPN connection that wouldn't start).