Improve platform parsing

esds/helpers/platform.py

@@ -94,7 +94,9 @@ class YAMLPlatformFile:
         interfaces=self.platform["interfaces"]
         node_count=self.default["node_count"]
         for i in interfaces:
-            is_wired=not interfaces[i]["wireless"]
+            if interfaces[i]["type"] not in ["wireless","wired"]:
+                self.parsing_error("Invalid interface type \""+interfaces[i]["type"]+"\"")
+            is_wired=interfaces[i]["type"] == "wired"
             links=list()
             if type(interfaces[i]["links"]) == list:
                 for link in interfaces[i]["links"]:

example/platform.yaml

@@ -11,11 +11,11 @@ nodes:
 
 interfaces:
     wlan0:
-        wireless: yes
+        type: "wireless"
         links:
             - 0 1Bps 10s 0 
         txperfs:
             - all 1Bps 10s
     eth0:
-        wireless: no
+        type: "wired"
         links: all 5Mbps 10s all