Added /api-docs to traefik configuration for both -test and -demo servers

Due to refactoring changes and naming changes, we intend to remove references to "ccce" as a string. The plan for now is to use /api as the endpoint that was previously /ccce-api; this already existed but did nothing. We also added an endpoint for API documentation.

For the time being we will leave /ccce-api present, but when we finalise this for production we will move this update to group_vars and remove the /ccce-api endpoint.