The documentation for the DevStack plugin suggests changing the
libvirt_opts value of /etc/default/libvirt-bin to allow for live
migration between compute nodes. This changeset removes the incorrect
spaces surrounding the equals sign in the file, which would cause the
libvirt-bin service to crash.
Change-Id: Id073da5cdc84a900a398f260d7f7b40f027eb9d3
Closes-Bug: #1533761
2ffeb48010