Merge pull request 'add server zone' (#411) from serverZone into master

Reviewed-on: #411

model/attr/zone.go

@@ -26,6 +26,9 @@ const (
 	// ServerKeyZone for attributes related to Server Keys
 	ServerKeyZone = Zone("serverkey")
 
+	// ServerZone is for attributes related to the server
+	ServerZone = Zone("server")
+
 	// UnknownZone is a catch all useful for error handling
 	UnknownZone = Zone("unknown")
 )
@@ -56,6 +59,8 @@ func ParseZone(path string) (Zone, string) {
 		return FilesharingZone, parts[1]
 	case ServerKeyZone:
 		return ServerKeyZone, parts[1]
+	case ServerZone:
+		return ServerZone, parts[1]
 	default:
 		return UnknownZone, parts[1]
 	}