code: @GET
     @Produces(MediaType.APPLICATION_JSON)
     @RolesAllowed("administrators")
     @Path("/repository-service-configuration")
     public Response getRepositoryServiceConfiguration()
     {
        RepositoryServiceConfiguration configuration = repositoryService.getConfig();
        RepositoryServiceConf conf =
           new RepositoryServiceConf(configuration.getRepositoryConfigurations(), configuration
              .getDefaultRepositoryName());
        return Response.ok(conf, MediaType.APPLICATION_JSON_TYPE).cacheControl(NO_CACHE).build();
     }
docs: Gives the repository service configuration which is composed
  of the configuration of all the repositories and workspaces
  @return Response
  return the Response with RepositoryServiceConf
  @response
  {code:json}
  {"repositoryEntry": the configuration of the repository }
  {code}
  @LevelAPI Experimental