Fix dashboard service and finder specs

spec/lib/gitlab/metrics/dashboard/finder_spec.rb

@@ -136,7 +136,7 @@ describe Gitlab::Metrics::Dashboard::Finder, :use_clean_rails_memory_store_cachi
 
   describe '.find_all_paths' do
     let(:all_dashboard_paths) { described_class.find_all_paths(project) }
-    let(:system_dashboard) { { path: system_dashboard_path, display_name: 'Default', default: true } }
+    let(:system_dashboard) { { path: system_dashboard_path, display_name: 'Default', default: true, system_dashboard: true } }
 
     it 'includes only the system dashboard by default' do
       expect(all_dashboard_paths).to eq([system_dashboard])
@@ -147,7 +147,7 @@ describe Gitlab::Metrics::Dashboard::Finder, :use_clean_rails_memory_store_cachi
       let(:project) { project_with_dashboard(dashboard_path) }
 
       it 'includes system and project dashboards' do
-        project_dashboard = { path: dashboard_path, display_name: 'test.yml', default: false }
+        project_dashboard = { path: dashboard_path, display_name: 'test.yml', default: false, system_dashboard: false }
 
         expect(all_dashboard_paths).to contain_exactly(system_dashboard, project_dashboard)
       end

spec/services/metrics/dashboard/project_dashboard_service_spec.rb

@@ -80,7 +80,8 @@ describe Metrics::Dashboard::ProjectDashboardService, :use_clean_rails_memory_st
           [{
             path: dashboard_path,
             display_name: 'test.yml',
-            default: false
+            default: false,
+            system_dashboard: false
           }]
         )
       end

spec/services/metrics/dashboard/system_dashboard_service_spec.rb

@@ -44,7 +44,8 @@ describe Metrics::Dashboard::SystemDashboardService, :use_clean_rails_memory_sto
         [{
           path: described_class::SYSTEM_DASHBOARD_PATH,
           display_name: described_class::SYSTEM_DASHBOARD_NAME,
-          default: true
+          default: true,
+          system_dashboard: true
         }]
       )
     end