Updated openstack/openstack
Project: openstack/nova  4932904aaad6a90168e616159c7f7d141f814033
null
Use 204 instead of 202 for delete of keypairs v3

The delete of keypairs will access db directly. It isn't async call.
So correct it to return 204.

Closes-bug: 1252169
DocImpact

Change-Id: Ie36c16e1773fa7f61b22bd6735342c7308c7ba35