Move output to connection utils

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

test/functional/tests/io_class/test_io_class_prevent_wrong_configuration.py

@@ -10,7 +10,7 @@ from api.cas.ioclass_config import IoClass
 from core.test_run import TestRun
 from storage_devices.disk import DiskType, DiskTypeSet, DiskTypeLowerThan
 from test_tools import fs_utils
-from test_utils.output import CmdException
+from connection.utils.output import CmdException
 from types.size import Unit, Size
 from tests.io_class.io_class_common import prepare, ioclass_config_path