Substitution Inputs

[Tal Liron <tliron@redhat.com>]

Hello ad-hoc folk,

In our discussion today about substitution mappings I forgot to mention a gaping hole in the spec:

what if the substituted topology template has required inputs? There is no standard way in TOSCA to specify them.

In Turandot, since I am using policies anyway (the directives are wholly insufficient), I use a custom policy property for this feature.