Fix check for cluster_role

[welteki]

Signed-off-by: Han Verstraete (OpenFaaS Ltd) han@openfaas.com

Description

Moves check for cluster_role env variable to operator and faas-netes container.

Motivation and Context

The checker always reported "Pro autoscaler detected, but cluster_role is disabled - unable to collect CPU/RAM metrics" when the autoscaler is enabled.

How Has This Been Tested?

Tested on k3d cluster by deploying OpenFaaS Pro with autoscaler and cluster role enabled and than running the checker. Then repeated the test with the autoscaler enabled but cluster role set to false.

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:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have signed-off my commits with git commit -s
• I have added tests to cover my changes.
• All new and existing tests passed.