Add static routes to NFDs in parallel

This allows setting up static routing in large
topologies in a reasonable time. Some timer values
are also reduced, seems to work fine to me

Change-Id: I112cfd216615a100db6dc18182db40ba614d83e6
diff --git a/minindn/apps/nfd.py b/minindn/apps/nfd.py
index 2b6a959..90a36b8 100644
--- a/minindn/apps/nfd.py
+++ b/minindn/apps/nfd.py
@@ -72,4 +72,4 @@
 
     def start(self):
         Application.start(self, 'nfd --config {}'.format(self.confFile), logfile=self.logFile)
-        Minindn.sleep(2)
+        Minindn.sleep(0.5)