Changing rolesByPerson in RoleAPIMocker

Summary

Currently The rolesByPerson map in the RoleApiMocker class is expecting key-value pairs consisting of the ID of the user and a RoleDetailsDTO instance that contains the information for a specific role. This causes an "impedance mismatch" as pApi.getRolesForPerson() is expected to return a list of RoleEditionDetailsDTO instead of RoleDetailsDTO.

Changes

• Use the mapper to map the DTO into the other DTO