Updated CS identity from CS Systèmes d'Information to CS GROUP

src/test/java/org/orekit/rugged/api/RuggedTest.java

src/test/java/org/orekit/rugged/errors/DumpManagerTest.java

src/test/java/org/orekit/rugged/errors/DumpReplayerTest.java

src/test/java/org/orekit/rugged/errors/DumpTest.java

...st/java/org/orekit/rugged/errors/RuggedExceptionTest.java

...est/java/org/orekit/rugged/errors/RuggedMessagesTest.java

...org/orekit/rugged/intersection/AbstractAlgorithmTest.java

...rg/orekit/rugged/intersection/BasicScanAlgorithmTest.java

...t/rugged/intersection/ConstantElevationAlgorithmTest.java

...rugged/intersection/duvenhage/DuvenhageAlgorithmTest.java

...kit/rugged/intersection/duvenhage/MinMaxTreeTileTest.java

.../java/org/orekit/rugged/linesensor/FixedRotationTest.java

.../org/orekit/rugged/linesensor/PolynomialRotationTest.java

...orekit/rugged/linesensor/SensorMeanPlaneCrossingTest.java

.../orekit/rugged/raster/CheckedPatternElevationUpdater.java

...java/org/orekit/rugged/raster/CliffsElevationUpdater.java

src/test/java/org/orekit/rugged/raster/CountingFactory.java

...java/org/orekit/rugged/raster/RandomLandscapeUpdater.java

src/test/java/org/orekit/rugged/raster/SimpleTileTest.java

src/test/java/org/orekit/rugged/raster/TilesCacheTest.java