Updated openstack/openstack
Project: openstack/python-novaclient  bd72fb0a2e6ebb0b4d778d9287d89b8151c05d89
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Fix i18n messages in novaclient, part II

This change make all the text visible by the user i18n. The
messages changes are in prints, logs, exceptions, helps, etc
Pep8 errors about "Multiple positional placeholders" also fixed.

Change-Id: Ia69c86bb2ee8be3fa8af734f793a81eefebe362d