Simplify standard postpublish script and remove them from some privat…

[BMillman19]

…e packages

Description

Refactored a bunch of duplicated postpublish scripts into our postpublish_utils

Motivation and Context

Reduces error when making a new package

How Has This Been Tested?

Ran scripts locally

Types of changes

• 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 change)

Checklist:

• Change requires a change to the documentation.
• Added tests to cover my changes.

[coveralls]

Coverage increased (+0.02%) to 90.261% when pulling d7a7e28 on feature/clean-post-publish-scripts into 254d3f5 on development.