Move size.py to types

Signed-off-by: Katarzyna Treder <katarzyna.treder@h-partners.com>

test/functional/tests/initialize/test_initialize_runlevel.py

@@ -16,7 +16,7 @@ from test_tools.fio.fio import Fio
 from test_tools.fio.fio_param import ReadWrite, IoEngine
 from test_utils import os_utils
 from test_utils.os_utils import Runlevel
-from test_utils.size import Size, Unit
+from types.size import Size, Unit
 
 
 mount_point = "/mnt/test"