Add documentation for CPMS generation/activation

Background

Now that we have a CPMS generator controller, we need to document how the user will interact with the CPMS to activate it.

Steps

• Document how to review the generated CPMS object
• Document how to fix the most common cluster state inconsistencies to make the generated CPMS object a no-op on the cluster
• Document how to Activate the CPMS object and what that means
• Update the CPMS enhancement regarding the installation.

Stakeholders

• Cluster Infra
• Service Delivery

Definition of Done

• Docs are merged

• Docs

• N/A

• Testing

• N/A