Adding P4D2_2018_East Folder (#116)

* Copying P4D2 Fall 2017 into P4D2 2018 East.

* Updated P4D2_2018_East VM.  Added vagrant URL workaround, cdrom to VM.  Updated to latest commits of BMV2, p4c, PI.  Known issue with p4runtime exercise.

* Applied patch from @antoninbas in  and updated solution

P4D2_2018_East/exercises/basic_tunnel/myTunnel_header.py

@@ -0,0 +1,20 @@
+
+from scapy.all import *
+import sys, os
+
+TYPE_MYTUNNEL = 0x1212
+TYPE_IPV4 = 0x0800
+
+class MyTunnel(Packet):
+    name = "MyTunnel"
+    fields_desc = [
+        ShortField("pid", 0),
+        ShortField("dst_id", 0)
+    ]
+    def mysummary(self):
+        return self.sprintf("pid=%pid%, dst_id=%dst_id%")
+
+
+bind_layers(Ether, MyTunnel, type=TYPE_MYTUNNEL)
+bind_layers(MyTunnel, IP, pid=TYPE_IPV4)
+