Tekton and Topology: Prerequisites in documentation insufficient to view logs

[Zaperex]

What needs to be done

The current documentation for the Tekton and Topology plugin requires the user to create a Service Account for the Kubernetes plugin. It references the Kubernetes RBAC section in the backstage documentation, which does not mention the permissions required to display the pod logs.

To remedy this, the user would also need to provide the following permission (specifically the pods/log permission) to the Service Account's ClusterRole:

kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: view-pod-logs
rules:
  # Base for Kubernetes plugin
  - apiGroups:
      - ""
    resources:
      - pods
      - pods/log
     verbs:
      - get
      - list

[Zaperex]

Relates to #548 and #550