Duplicate RBAC entries for the `namespaces` resource

[lindhe]

Describe the bug
There exists duplicate entries for the namespace resource in the trident-operator ClusterRole:

trident/helm/trident-operator/templates/clusterrole.yaml

Lines 10 to 16 in ee2d974

	- apiGroups:
	- ""
	resources:
	- namespaces
	verbs:
	- get
	- list

trident/helm/trident-operator/templates/clusterrole.yaml

Lines 244 to 250 in ee2d974

	- apiGroups:
	- ""
	resources:
	- namespaces
	verbs:
	- create
	- patch

This makes it harder than necessary to review what permissions are granted to the application.

Expected behavior

Instead of having one rule for get and list and one rule for create and patch, I would have expected there to be only one rule for all four verbs:

 - apiGroups: 
     - "" 
   resources: 
     - namespaces 
   verbs:
     - get
     - list
     - create 
     - patch 

Additional context

Note that there are other rules which may seem to also be duplicates, like podsecuritypolicies and securitycontextconstraints. These, however, do actually differ since they have specified resourceNames for each "duplicate" entry!

[clintonk]

This is intentional and not a bug. The operator RBAC must be a superset of the Trident RBAC, and it highlights that by having 2 sections of rules, one that duplicates Trident and one that layers on the extra privileges that the operator requires.