IPM should natively configure mappings specified in NamespaceConfig/Interop element of module.xml

Currently if a module has the NamespaceConfig defaults to EnableEnsemble or Interop set to true, it is only used in the verify phase to configure the namespace for interop. It should however, do this automatically. There should be a way to enable a namespace with just the interop mappings (e.g. a namespace just for modifying code) vs configuring a namespace as an application that needs interop i.e. where a production can be created.