Add /6/ urls in acceptance tests.
Add /6/ urls in acceptance tests.

glogiotatidis/snippets-service,glogiotatidis/snippets-service,mozmar/snippets-service,mozmar/snippets-service,mozilla/snippets-service,mozilla/snippets-service,mozilla/snippets-service,glogiotatidis/snippets-service,mozilla/snippets-service,glogiotatidis/snippets-service,mozmar/snippets-service,mozmar/snippets-service