Slice.addLease handle lease without testbed attribute

myslicelib/model/slice.py

@@ -85,7 +85,8 @@ class Slice(Entity):
 
     def addLease(self, lease):
         self.appendAttribute('leases', lease.getAttributes())
-        if lease.getAttribute('testbed') not in self.getAttribute('testbeds'):
+        #self.addResources(list(set(lease.getAttribute('resources')) - set(self.getAttribute('resources'))))
+        if lease.hasAttribute('testbed') and lease.getAttribute('testbed') not in self.getAttribute('testbeds'):
             self.appendAttribute('testbeds', lease.getAttribute('testbed'))
         self.setAttribute('run_am', True)
         return self