serve http/webdav: factor common http server creation to httplib

cmd/serve/httplib/http_new.go

@@ -0,0 +1,16 @@
+// HTTP parts go1.8+
+
+//+build go1.8
+
+package httplib
+
+import (
+	"net/http"
+	"time"
+)
+
+// Initialise the http.Server for post go1.8
+func initServer(s *http.Server) {
+	s.ReadHeaderTimeout = 10 * time.Second // time to send the headers
+	s.IdleTimeout = 60 * time.Second       // time to keep idle connections open
+}