Ability to inject "Requires/Wants" and "After" etc into generated systemd unit files

[walro]

For example, some of our apps might need network (or some other service) before they should start, that would look like:

[Unit]
Requires=network-online.target
After=network-online.target

Currently we have no way to do things like this and foreman does not seem to offer it:

• https://github.com/ddollar/foreman/blob/v0.87.0/lib/foreman/export/systemd.rb
• https://github.com/ddollar/foreman/tree/v0.87.0/data/export/systemd