Detect when running in managed services vs self-managed

User Story:

As a hub cluster admin, I want to be able to:

• Detect when running in managed vs self-managed mode in Azure

so that I can prevent

• Impossible usage of managed service components in self-manage use cases

Acceptance Criteria:

Description of criteria:

• HyperShift controllers are aware of when they run in managed environment
• HyperShift components have a single programmatic way to check in which mode they run
• HyperShift deployment takes the mode in consideration when setting up its components

(optional) Out of Scope:

Implementing managed-only configs is out of scope for this story

Engineering Details:

This does not require a design proposal.
This does not require a feature gate.