Use Apache Commons Math 3.6 API for rotations.

src/main/java/org/orekit/rugged/los/FixedRotation.java

src/main/java/org/orekit/rugged/los/PolynomialRotation.java

src/test/java/org/orekit/rugged/TestUtils.java

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

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

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