Update host_darwin.go
Update host_darwin.go

The /System/Library/CoreServices/ServerVersion.plist exists on macOS servers , but not on a workstation such as my laptop. The actual terminoly is mostly borrowed from the windows equivalent as @Lomanic suggested. In theory, this should make interpreting the results from the two platforms a bit more consistent.

Note: The macOS server application can be installed on almost any macOS workstation to make it a server that can manage other apple devices.

influxdb/gopsutil,influxdb/gopsutil