Updated openstack/openstack
Project: openstack/python-neutronclient  50679755d53044c5a5312fc918f1d44b1c2a917a

Fix mixed usage of _

* all modules are using function of _ from oslo.i18n
* remove the definition of _ from openstack.common.__init__.py for safety

Change-Id: Ice2f8be1190fd13e8991a8c7fa55ca636341e875
Closes-Bug: #1382476