[tests] fix test_smc, set nsds before prepareIntegratorForDS
[tests] fix test_smc, set nsds before prepareIntegratorForDS

radarsat1/siconos,bremond/siconos,bremond/siconos,radarsat1/siconos,bremond/siconos,siconos/siconos,bremond/siconos,siconos/siconos,siconos/siconos,bremond/siconos,fperignon/siconos,radarsat1/siconos,fperignon/siconos,radarsat1/siconos,radarsat1/siconos,fperignon/siconos,siconos/siconos,fperignon/siconos,fperignon/siconos