Server registration: OS Info "Unknown"

[roydejong]

When the agent runs as a service, even when running under the root user, the OS info no longer seems to be reported correctly.

Bad payload
The payload sent during registration (running as service under root user) looks like this:

{  
   "push_server_enabled":true,
   "os_info":{  
      "platform":"Linux",
      "distro":"unknown",
      "release":"unknown",
      "codename":"",
      "kernel":"4.10.0-32-generic",
      "arch":"x64",
      "hostname":"guardhouse",
      "logofile":"linux"
   }
}

Expected payload
The payload sent when running manually, not as a service, under the root user:

{  
   "push_server_enabled":true,
   "os_info":{  
      "platform":"Linux",
      "distro":"Ubuntu",
      "release":"17.04",
      "codename":"zesty",
      "kernel":"4.10.0-32-generic",
      "arch":"x64",
      "hostname":"guardhouse",
      "logofile":"ubuntu"
   }
}

We're using the systeminformation npm module, may need to look into how it works.