Create repositories in IssuesController specs

In the real world a project always has a repository. This fact allows
code such as Issue#related_branches to work without explicitly checking
if a repository exists.

spec/controllers/projects/issues_controller_spec.rb

@@ -2,7 +2,7 @@ require('spec_helper')
 describe Projects::IssuesController do
   describe "GET #index" do
-    let(:project) { create(:project) }
+    let(:project) { create(:project_empty_repo) }
     let(:user) { create(:user) }
     let(:issue) { create(:issue, project: project) }
@@ -41,7 +41,7 @@ describe Projects::IssuesController do
   end
   describe 'Confidential Issues' do
-    let(:project) { create(:empty_project, :public) }
+    let(:project) { create(:project_empty_repo, :public) }
     let(:assignee) { create(:assignee) }
     let(:author) { create(:user) }
     let(:non_member) { create(:user) }