Expose some internal properties as public

[jstnlef]

Description

In order to write a proper alternative to the DefaultClusterContext, we need these properties to be public. I believe they should be considering that the API does allow end users to swap the IClusterContext with the WithClusterContextProducer method on ClusterConfig

Purpose

This pull request is a:

• Bugfix (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

• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)