Disable lazy gettext

This change disables lazy gettext functionality in Nova,
due to problems with character encoding and logging
detailed in bug 1225099.

It is part of a series of commits across all projects with
lazy gettext enabled.

Change-Id: Ia934a7df9386baf6ae8eb9ff48c24386c47ecd23
Partial-bug: 1225099
Merge "Disable lazy gettext"