Added prototpye of SONATA gatekeeper API. Can already accept uploaded packages and store them.
diff --git a/src/emuvim/dcemulator/node.py b/src/emuvim/dcemulator/node.py
index 74540ab..6030153 100755
--- a/src/emuvim/dcemulator/node.py
+++ b/src/emuvim/dcemulator/node.py
@@ -80,6 +80,9 @@
         self.switch = None  # first prototype assumes one "bigswitch" per DC
         self.containers = {}  # keep track of running containers
 
+    def __repr__(self):
+        return self.label
+
     def _get_next_dc_dpid(self):
         global DCDPID_BASE
         DCDPID_BASE += 1