Symbiosis: PHP 7.1/7.2 support
PHP7.0's EOL is 3/12/18, which is a little short, given that PHP7.2 is only 'officially' available in Buster, and PHP7.1 in Sid.
We already run 7.1 and 7.2 in containers (Systemd-nspawn, Docker) for some customers using Symbiosis, but the setup procedure is mostly manual.
Ideally we'd want to be able to create a file e.g.
7.2 to automatically use the appropriate Apache template for that domain.