Cluster admins user do not get RHODS admin access if CRB is defined for a group

Description of problem:

If cluster admin privileges are assign to a group instead of specific user the Dashboard does not recognize the users from that group as RHODS Admin. 

Bug related to https://issues.redhat.com/browse/RHODS-2740 

Prerequisites (if any, like setup, operators/versions):

Steps to Reproduce

1. Assign cluster admin permission to an Openshift group
2. Log in RHODS Dashboard using one of the users belonging to the group from point 1
3. check if you have access to "Settings" section
4. Assign cluster admin permission to a specific user rather than a group
5. repeat point 2 and 3

Actual results:

• no RHODS admin access for cluster admin "group"
• RHODS admin access granted for cluster admin "user"

Expected results:

RHODS admin access granted for all the cluster admins

Reproducibility (Always/Intermittent/Only Once):

Always

Build Details:

RHODS v1.16

Workaround:

Assign cluster admin permissions using this kind of ClusterRoleBinding:

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: my-user-cluster-admin
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
  - kind: User
    apiGroup: rbac.authorization.k8s.io
    name: my-user

Additional info:.

CRB for cluster admin "group"

kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
   name: osd-cluster-admin
labels:
    hive.openshift.io/managed: 'true'
managedFields:
   - kind: Group
      apiGroup: rbac.authorization.k8s.io
      name: cluster-admins
subjects:     
   - kind: Group         
     apiGroup: rbac.authorization.k8s.io         
     name: my-user-group
roleRef:
   apiGroup: rbac.authorization.k8s.io
   kind: ClusterRole
   name: cluster-admin