remove base vdev from create_network_configuration_files API
remove base vdev from create_network_configuration_files API

Change-Id: I0581328fcd0e777b7b8e7755fbe8b385611f4eaa

mfcloud/python-zvm-sdk,mfcloud/python-zvm-sdk,mfcloud/python-zvm-sdk,mfcloud/python-zvm-sdk