During the renaming of Riot to Element, the path for the webapp changed
from /opt/riot to /opt/element. In those folders, the archives are
unpacked, resulting in paths like /opt/element/riot-v${version}. Since
the archives are not yet renamed
(https://github.com/vector-im/element-web/issues/14896), this riot
reference has to stay for now. In the renaming, this was accidentally
changed prematurely, resulting in this regression.
Riot is now Element, and therefore this role has to do a lot of
`s/riot/element/g`. There's still a few references to riot here and
there, but fixing those depends on external changes.
This does not attempt any automatic migration, you will need to clean
up the old webroot or container yourself.
BREAKING CHANGE: role name and variable names have changed
