Remove domain from esx name

 Domain in esx name can be a problem with influxgraph and grafana.

Author: MicKBfr

vsphere-influxdb.go

@@ -443,7 +443,7 @@ func (vcenter *VCenter) Query(config Configuration, InfluxDBClient influxclient.
 
 		// Extra tags per host
 		hostSummary[host.Self] = make(map[string]string)
-		hostSummary[host.Self]["name"] = host.Summary.Config.Name
+		hostSummary[host.Self]["name"] = strings.Replace(host.Summary.Config.Name, config.Domain, "", -1)
 		hostSummary[host.Self]["cluster"] = hostToCluster[host.Self]
 
 		// Extra metrics per host