* dsl generate zip file
* minor fix
* fix zip read in the unit test
* update sample tests
* dsl compiler generates pipeline based on the input name suffix
* add unit tests for different output format
* update the sdk client to support tar zip and yaml
* fix typo
* fix file write
* initial watson pipeline
* updates
* updates
* Update creds
* updated dockerhub base files
* update watson pipeline (#2)
Removing references to wml-base image, and recreating it with python-slim as base image
* address review comment (#3)
* change s3 to cos (#4)