Set session host

Add ping to L2 router

handlers/ping.go

@@ -1,23 +1,6 @@
 package handlers
 
-import (
-	"log"
-	"net/http"
-
-	"github.com/play-with-docker/play-with-docker/config"
-	"github.com/shirou/gopsutil/load"
-)
+import "net/http"
 
 func Ping(rw http.ResponseWriter, req *http.Request) {
-	// Get system load average of the last 5 minutes and compare it against a threashold.
-
-	a, err := load.Avg()
-	if err != nil {
-		log.Println("Cannot get system load average!", err)
-	} else {
-		if a.Load5 > config.MaxLoadAvg {
-			log.Printf("System load average is too high [%f]\n", a.Load5)
-			rw.WriteHeader(http.StatusInsufficientStorage)
-		}
-	}
 }