changed the core functionality of cmf artifact push.

[varkha-d-sharma]

Changed the core functionality of cmf artifact push. Now it will take pipeline name and mlmd file name (in case user gave metadata file name other than default 'mlmd') and then will push only the file mentioned in the mlmd file

Related Issues / Pull Requests

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Description

Include a brief summary of the proposed changes.

What changes are proposed in this pull request?

• [ ] Bug fix (non-breaking change which fixes an issue).
• [ ] New feature (non-breaking change which adds functionality).
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected; for instance, examples in this repository need to be updated too).
• [ ] This change requires a documentation update.

Checklist:

• [ ] My code follows the style guidelines of this project (PEP-8 with Google-style docstrings).
• [ ] My code modifies existing public API, or introduces new public API, and I updated or wrote docstrings that uses Google-style formatting and any other formatting that is supported by mkdocs and plugins this project uses.
• [ ] I have commented my code.
• [ ] My code requires documentation updates, and I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works.
• [ ] New and existing unit tests pass locally with my changes.