To be able to resize a ephemeral node, we need to set
allow_resize_to_same_host to true in nova-api.
By default the value will be set to false as the openstack default.
Co-Author: Cyril Lopez <cylopez@redhat.com>
Change-Id: Idc5710d72c3dcffdd34eb1b7203c47b681b44c53
Closes-bug: #1535606