Remove outdated _ as a builting from pylintrc

Closes-bug: #1383302
Change-Id: I35e73fcabf39a01b667d570478227c960e1c450c
Merge "Remove outdated _ as a builting from pylintrc"
Cinder api service doesn't handle SIGHUP properly

When SIGHUP signal is sent to cinder-api service, it doesn't complete
processing of all pending requests before terminating all the
processes.

This change is a copy of Abhishek Kekane's fix for nova api.

Change-Id: I049d2aa2f3ad1fe388e00213a71f374803ed409a
Closes-Bug: #1334647
Merge "Cinder api service doesn't handle SIGHUP properly"