Updated openstack/openstack
Project: openstack/nova  13937de8a930f87ad1b0ab45acc66d41ba7fc39a
null
Fix the explanations of HTTPNotFound response

Nova wsgi framework gets "explanation" from HTTPNotFound exception and
outputs it into a response body as "message" attribute. Now some error
explanations are passed to HTTPNotFound exception without explanation
argument and they are not output to a response body. As the result,
the default message "The resource could not be found." of wsgi library
are output to a response body instead.

This patch fixes them to output right message to a response body.

Change-Id: I80d3a2da6258e94c485ce024eb310a63bcf39773
Closes-Bug: #1285437