Merge branch 'zj-regenerate-gitaly-config-rspec' into 'master'

Regenerate Gitaly's config.toml each rspec run

See merge request gitlab-org/gitlab-ce!22562

spec/support/helpers/test_env.rb

@@ -162,6 +162,7 @@ module TestEnv
       version: Gitlab::GitalyClient.expected_server_version,
       task: "gitlab:gitaly:install[#{gitaly_dir},#{repos_path}]") do
 
+        Gitlab::SetupHelper.create_gitaly_configuration(gitaly_dir, { 'default' => repos_path }, force: true)
         start_gitaly(gitaly_dir)
       end
   end