Updated openstack/openstack
Project: openstack/python-novaclient  7b44ce673449dc74b1853ef01e15c6fe7faf00dc
null
Fixes ambiguous cli output between "None" and NoneType

Print hyphen(-) in python client output when attribute value is not
set(NoneType) so that it is distinguishable between "None" string
and NoneType value.

Change-Id: I5ec0f39f13aca45fa95ddb59472c20207c63bf91
Closes-Bug: #1266414