Refactor new code imported from GL workflow scripts to conform with the style of the rest of the project

[vivus-ignis]

What would you like to be added:

• OOP style for the code in github module

Why is this needed:

Suggestions from @NotTheEvilOne:

• do not use s3_artifacts._bucket property, use bucket (without underscore) instead 189 refactor new code imported from gl workflow scripts #232

• add support for semantic versioning Semver support #219

• use commit_id parameter for CName constructor 189 refactor new code imported from gl workflow scripts #232