Extensions needed for project TELEMETRY

[mike1813]

According to @panositi, the EU project TELEMETRY has a use case that requires some elaboration in the models of software processes and control of router functions. The requirements are:

1. A mechanism for relating a Process to Data assets that represent the software code executed by that process.
2. A mechanism for describing internal library dependencies within a Process, either by creating relationships between Data assets representing the code, or by allowing subprocesses representing called libraries to be modelled explicitly.
3. A way to model the relationship between routing functions of a Host (already modelled as Interface and LogicalSegment assets) and processes running on that Host.

These extensions will add complexity, so ideally they should be introduced as optional sub-models.