Remove:
"vmware_nsx/db/lsn_db.py:55: DeprecationWarning: Using function/method
'instance.ugettext()' is deprecated: Builtin _ translation function is
deprecated in OpenStack; use the function from _i18n module for your
project.
msg = _('Unable to find Logical Service Node for network %s')"
Change-Id: Ia813c011a41e5798e7b07d096e56792a0366620f