One command to rule them all

We use only one command ays to control everything:

• Configure a service and all its dependencies (if any): ays init -n service-name
• Install service: ays apply
• Start a service: ays start -n service-name
• Stop a service: ays stop -n service-name
• Check status for all installed services: ays status
• Check status for only local services (on this machine) ays status --local
• Update metadata (like Ubuntu's apt-get update) ays mdupdate