Remove DataHub from Helm and improve refresh script

[jerenmb]

Description

Enables passing parameters to the Helm refresh script for controlling deletion of PVCs, timeout of install, and updating of dependencies. Removes DataHub from the Helm chart.

Motivation and Context

How Has This Been Tested?

Tested locally

Screenshots (if appropriate):

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 not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.