Updated openstack/openstack
Project: openstack/nova  6f097b94c9fda19d62798e8f137de5046756bbe4
null
Fix the explanations of HTTPNotFound for keypair's API

Gets the "explanation" from HTTPNotFound exception and returns
correct message. the commit Ia784e09cda986a421e83c2820dfd0a2267867cdd
has fixed this kind of bug already, but this bug is remained.

Closes-Bug: #1307338
Change-Id: I6811eecba86938e4253f437b7677cb7e4468fd67