argument typo -p

```
-p portnum,locport (*)
Direct the control connection to a netserver listening on the specified port, rather than using a "netperf" entry in /etc/services or the internal default (port 12865). If ",locport" is specified the control connection will be established from that local port number. Specifying a single port number with no comma will specify only the remote netserver port number and will leave local port number selection to the stack.
-P 0|1
Show (1) or suppress (0) the test banner.
```

pkg/netperf/netperf.go

@@ -43,7 +43,7 @@ func Run(c *kubernetes.Clientset, rc rest.Config, nc config.Config, client apiv1
 			"--",
 			"-k", fmt.Sprint(omniOptions),
 			"-m", fmt.Sprint(nc.MessageSize),
-			"-P", fmt.Sprint(ServerDataPort),
+			"-p", fmt.Sprint(ServerDataPort),
 			"-R", "1"}
 	} else {
 		cmd = []string{"bash", "super-netperf", strconv.Itoa(nc.Parallelism), "-H",