Fixing setproctitle function

Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>
(cherry picked from commit bf6e874)
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>

pkg/proctitle/proctile.go

@@ -4,11 +4,9 @@
 package proctitle
 
 import (
-	"os"
-
 	"github.com/erikdubbelboer/gspt"
 )
 
 func SetProcTitle(cmd string) {
-	gspt.SetProcTitle(os.Args[0] + " agent")
+	gspt.SetProcTitle(cmd)
 }