Openstack client now defaults to unlimited max-width instead of the previous fit-to-terminal width. As a result, many commands have very wide and unreadable output. This change fixes the issue by setting a default max width of 80 (traditional terminal width). User still has the option to set a different max-width or specify --fit-width to fit to terminal width. Change-Id: I5898639942bd4eb17b69c403277b46eb69951265