dbus properties are missing the `Environment` key.

[jonnylangefeld]

I'm using transient units and properties to run units. The function call takes a dbus.Property slice:

go-systemd/dbus/methods.go

Line 191 in 7d375ec

func (c *Conn) StartTransientUnitContext(ctx context.Context, name string, mode string, properties []Property, ch chan<- string) (int, error) {

I got it working to run a basic binary. But I'm trying to replicate this from a unit file:

Environment="ONE=one" 'TWO=two two'
ExecStart=echo $ONE $TWO ${TWO}

Es described in the docs. But unfortunately there is no PropEnvironment in the debus properties file:
https://github.com/coreos/go-systemd/blob/main/dbus/properties.go#L37.

It would be great if that could be added.