Cts newregistrymanager

- RegistryManager works with instance and not class. So CTS can be used as an OSGI lib.
- CTS tests have refactored. All tests implement only one class  that contains all necessary methods (Factory, RegistryManager...)
- A RegistryException has been added to throw correctly the error message
- Consequently the CTS version has been updated from 1.2 to 1.2.1