Consider OSS plans highest tier

ee/app/helpers/billing_plans_helper.rb

@@ -257,7 +257,7 @@ def upgrade_plan_data(namespace_id)
   end
 
   def highest_tier?(namespace)
-    namespace.gold_plan? || namespace.ultimate_plan?
+    namespace.gold_plan? || namespace.ultimate_plan? || namespace.opensource_plan?
   end
 end
 

ee/spec/helpers/billing_plans_helper_spec.rb

@@ -537,24 +537,26 @@
 
     let(:group) { build(:group) }
 
-    where(:free_personal, :trial_active, :gold_plan, :ultimate_plan, :expectations) do
-      false |  false | false | false | true
-      false |  true  | false | false | true
-      false |  false | true  | false | false
-      false |  true  | true  | false | true
-      false |  false | false | true  | false
-      false |  true  | false | true  | true
-      false |  false | true  | true  | false
-      false |  true  | true  | true  | true
-      true  |  true  | true  | true  | false
+    where(:free_personal, :trial_active, :gold_plan, :ultimate_plan, :opensource_plan, :expectations) do
+      false | false | false | false | false | true
+      false | true  | false | false | false | true
+      false | false | true  | false | false | false
+      false | true  | true  | false | false | true
+      false | false | false | true  | false | false
+      false | true  | false | true  | false | true
+      false | false | true  | true  | false | false
+      false | true  | true  | true  | false | true
+      true  | true  | true  | true  | false | false
+      false | false | false | false | true  | false
     end
 
     with_them do
       before do
+        allow(group).to receive(:free_personal?).and_return(free_personal)
         allow(group).to receive(:trial_active?).and_return(trial_active)
         allow(group).to receive(:gold_plan?).and_return(gold_plan)
         allow(group).to receive(:ultimate_plan?).and_return(ultimate_plan)
-        allow(group).to receive(:free_personal?).and_return(free_personal)
+        allow(group).to receive(:opensource_plan?).and_return(opensource_plan)
       end
 
       it 'returns boolean' do