Fix names: rename types to type_def

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

test/functional/tests/example/example_test.py

@@ -18,7 +18,7 @@ from test_tools.disk_utils import Filesystem
 from test_tools.fs_utils import copy
 from test_utils.filesystem.directory import Directory
 from test_utils.filesystem.file import File
-from types.size import Size, Unit
+from type_def.size import Size, Unit
 from test_utils.emergency_escape import EmergencyEscape
 from test_tools.fstab import add_mountpoint
 from storage_devices.lvm import Lvm