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/calc/topology.json

@@ -0,0 +1,12 @@
+{
+    "hosts": [
+        "h1",
+        "h2"
+    ],
+    "switches": {
+        "s1": { "cli_input" : "s1-commands.txt" }
+    },
+    "links": [
+        ["h1", "s1"], ["h2", "s1"]
+    ]
+}