Fix AttributeError in delete_nic

Author: dwettstein

pyvcloud/vcd/vm.py

@@ -716,13 +716,14 @@ def delete_nic(self, index):
         indices = [None] * 10
         nic_not_found = True
         # find the nic with the given index
-        for nc in net_conn_section.NetworkConnection:
-            if int(nc.NetworkConnectionIndex.text) == index:
-                net_conn_section.remove(nc)
-                nic_not_found = False
-            else:
-                indices[int(nc.NetworkConnectionIndex.
-                            text)] = nc.NetworkConnectionIndex.text
+        if hasattr(net_conn_section, 'NetworkConnection'):
+            for nc in net_conn_section.NetworkConnection:
+                if int(nc.NetworkConnectionIndex.text) == index:
+                    net_conn_section.remove(nc)
+                    nic_not_found = False
+                else:
+                    indices[int(nc.NetworkConnectionIndex.
+                                text)] = nc.NetworkConnectionIndex.text
 
         if nic_not_found:
             raise InvalidParameterException(