fix(uat): empty adminRoles, add OIDC provider IAM permissions

EKS auto-grants cluster creator access, so adminRoles should not
include the creating role (causes 409 conflict). Re-add OIDC provider
IAM actions needed for EKS IRSA setup.

Author: mchmarny

tests/uat/aws/config.yaml

@@ -16,8 +16,7 @@ cluster:
     coreDns: ""
     vpcCni: ""
     kubeProxy: ""
-  adminRoles:
-    - github-actions-role-aicr
+  adminRoles: []
   controlPlane:
     allowedCidrs:
       - 12.97.180.32/27 # AUS-A