Roles in runtime model as dynamic interfaces

[iliasger]

A role should be a separate class/interface (in Java 8).
A component specifies which roles it can play via e.g. @ComponentRoles(roleClass1, roleClass2, ...)
An ensemble specifies the roles of the coordinator and member e.g. via @CoordinatorRole(roleClass)

Also check that each process parameter exists as a field in the component.