docker: Update graphql service configuration
docker: Move graphql service in main docker-compose file
It is a lightweight service and is getting ready for production so
better moving it in the main docker-compose file.
Also update configuration as there is no keycloak service available
by default in the docker environment and bump max query cost as
it is a testing environment.
docker: Activate graphql authentication when keycloak is available
It enables to test graphql authentication feature in the docker environment.
Related to swh-graphql!127 (merged)
Edited by Antoine Lambert