[Pkg-shinken-maint] Bug#777148: shinken does not start after install, need to manually enable systemd services

[Thomas Pierson]

More infos: In fact this is not good idea to enable all individual 
services
(shinken-poller, shinken-broker, …) along with the "global" service 
(shinken) because this cause
concurent/duplicate start of deamons and this causes troubles.