Streamsx-objectstorage

New features:
* Application configuration support (IAM credentials JSON for IBM Cloud Object Storage service) 71
* ObjectStorageSink: Consistent Region support 76

Resolved issue (default for IAMTokenEndpoint) 79

Solved issues:
* 77
* 80
* 81

New feature:
* Globalization support: 85

* Resolved issues:
- Error message fix 73
- Operator fails in Streaming Analytics service IBM Streams 4.2.4.2 - java.lang.LinkageError 74

* Documentation updated

New features

* native functions with IAM 50
* IGC support 51
* consistent region support for Scan and Source operators

Fixed issues

* ObjectStorageSink: Output tuple size attribute 64
* ObjectStorageSink: Final punctuation handling 47

Test extension

* Additional test cases (Python)
* Python unit tests `run_for` value increased
* Additional unit tests (Java) 66

* ObjectStorageScan control port added 63
* error messages updated
* unit tests extended 31 49