Updated openstack/openstack
Project: openstack/python-novaclient  65f9b9b61ea2af5c3f9f20e3f81a69a470ac26c1
null
Allow graceful shutdown on Ctrl+C

Currently it prints a stacktrace and exits. This patch makes it print
a message and exit gracefully.

Closes-Bug: #1256732

Change-Id: I59ae8d09be43cd3e56dbe9bed4f6f328377dcc13