Catch every errors on opening console

cloudcontrol/node/hypervisor/__init__.py

@@ -382,6 +382,10 @@ class Handler(HostHandler):
             # cannot create socketpair
             logger.error('Cannot create connection to VM console')
             raise
+        except Exception:
+            logger.exception('Error while trying to open console for domain %s',
+                             name)
+            raise
 
         def on_shutdown(tun):
             """Method of Tunnel protocol close callback."""