Allow helm chart to support external cluster level RBAC

[hafe]

Is your feature request related to a problem? Please describe.
The helm chart comes with a ClusterRole and a ClusterRoleBinding. The ClusterRoleBinding gives very wide access to the whole cluster for example read access to every secret in the cluster. This does not align well with function provided by the -watch-secret-namespace option.

Describe the solution you'd like
A simple knob to disable the cluster level RBAC resource generation from the helm chart. This gives users a way to provide more suited cluster level RBAC externally yet use the upstream helm chart.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

[github-actions]

Hi @hafe thanks for reporting!

Be sure to check out the docs and the Contributing Guidelines while you wait for a human to take a look at this 🙂

Cheers!

[danielnginx]

Hi @hafe, could you please add the documentation for this feature?

[hafe]

Sure, exactly where do you mean?

[danielnginx]

For example: Add the configuration on helm installation - Configuration

https://docs.nginx.com/nginx-ingress-controller/installation/installing-nic/installation-with-helm/#configuration

[vepatel]

Thanks @hafe!