Add network and graphs to legacy routes too

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

config/routes/project.rb

@@ -507,7 +507,7 @@ constraints(::Constraints::ProjectUrlConstrainer.new) do
           constraints: { project_id: Gitlab::PathRegex.project_route_regex },
           module: :projects,
           as: :project) do
-      Gitlab::Routing.redirect_legacy_paths(self, :settings, :branches, :tags)
+      Gitlab::Routing.redirect_legacy_paths(self, :settings, :branches, :tags, :network, :graphs)
     end
   end
 end

spec/routing/project_routing_spec.rb

@@ -609,6 +609,8 @@ describe 'project routing' do
       expect(get('/gitlab/gitlabhq/-/graphs/ends-with.json')).to route_to('projects/graphs#show', namespace_id: 'gitlab', project_id: 'gitlabhq', id: 'ends-with.json')
       expect(get('/gitlab/gitlabhq/-/graphs/master?format=json')).to route_to('projects/graphs#show', namespace_id: 'gitlab', project_id: 'gitlabhq', id: 'master', format: 'json')
     end
+
+    it_behaves_like 'redirecting a legacy project path', "/gitlab/gitlabhq/graphs/master", "/gitlab/gitlabhq/-/graphs/master"
   end
 
   describe Projects::ForksController, 'routing' do