Construct a Nodeset.Union using an inlined Nodeset.

For example, to add a nodeset to a job configuration:

Zuul.Job::{
  nodeset = Some (Zuul.Nodeset.Inline Zuul.Nodeset.mkSimple "test-label")
}

let Nodeset = { Type = ./Type.dhall, Union = ./union.dhall }

let Inline
    : Nodeset.Type -> Nodeset.Union
    = (./union.dhall).Inline

in  Inline