[Rails5] Fix project import spec

When importing a project, after clicking 'Create Project' button, user is
redirected either to to the project's import page or project's show page
depending whether import is still in progress.

The difference in behavior is probably caused by `test_after_commit`
which is now included in Rails 5.

ee/spec/features/projects/new_project_spec.rb

@@ -95,7 +95,13 @@ describe 'New project' do
           click_button 'Create project'
 
           created_project = Project.last
-          expect(current_path).to eq(project_path(created_project))
+
+          if Gitlab.rails5?
+            expect(current_path).to eq(project_import_path(created_project))
+          else
+            expect(current_path).to eq(project_path(created_project))
+          end
+
           expect(created_project.project_feature).to be_issues_enabled
         end
       end
@@ -113,7 +119,13 @@ describe 'New project' do
           click_button 'Create project'
 
           created_project = Project.last
-          expect(current_path).to eq(project_path(created_project))
+
+          if Gitlab.rails5?
+            expect(current_path).to eq(project_import_path(created_project))
+          else
+            expect(current_path).to eq(project_path(created_project))
+          end
+
           expect(created_project.mirror).to eq(true)
           expect(created_project.project_feature).not_to be_issues_enabled
         end