Rename test class for NsiInfraDocumentsService
Add switching service to topology.

This required an update of the nmlbase schema to an unofficial version
used by the PCE (see BOD-NSI) and the addition of the nsi-service-definition
schema.
Merge feature 'SwitchingService in topology'
Add ServiceDefinition to Topology document
Topology issues vlan swapping based on vlan translation flag