Retrieving default values of dicts properly

The '.get' method of dicionaries takes the default
value as positional argument and not as key word
argument. Fixing this as it was accidentally added
in my last patches.
Signed-off-by: Helga Velroyen <helgav@google.com>
Reviewed-by: Jose Lopes <jabolopes@google.com>

tools/move-instance

@@ -637,7 +637,7 @@ class MoveDestExecutor(object):
 
     disks = MoveDestExecutor._GetDisks(instance)
     nics = MoveDestExecutor._GetNics(instance, override_nics)
-    os_type = instance.get("os", default=None)
+    os_type = instance.get("os", None)
 
     # TODO: Should this be the actual up/down status? (run_state)
     start = (instance["config_state"] == "up")
@@ -645,9 +645,9 @@ class MoveDestExecutor(object):
     assert len(disks) == len(instance["disks"])
     assert len(nics) == len(instance["nics"])
 
-    inst_beparams = instance.get("be_instance", default={})
-    inst_hvparams = instance.get("hv_instance", default={})
-    inst_osparams = instance.get("os_instance", default={})
+    inst_beparams = instance.get("be_instance", {})
+    inst_hvparams = instance.get("hv_instance", {})
+    inst_osparams = instance.get("os_instance", {})
 
     return cl.CreateInstance(constants.INSTANCE_REMOTE_IMPORT,
                              name, disk_template, disks, nics,