Support for custom types

[PierreR]

It would be nice to add support for custom types:

https://puppet.com/docs/puppet/4.10/custom_types.html

Or at least introduce a way to ignore erors such as for instance, this module would fail to parse with

unexpected "Systemd::S"
expecting DataType

[bartavelle]

Hum, yes, that should be nice to add. I am not sure when I will have time for it though :/