Add config parameter instance_floating_ip_net to control
floating ip assignment for a multi-homed instances. This ensures
the floating ip can be correctly assigned to the instance port
that is connected to the preferred network for floating ip assignment.
This avoids the default first-returned selection method which may
choose a network to which floating ip's can't be assigned,
e.g. because that network is not reachable from the floating ip
network.
Only associate floating IPs if user provided "floating_ip_network" or
"floating_ip".
Remove FindExternalNetwork helper method because it won't be used.
Add support for the external network reference by it's name apart from
ID.
Include external network id in a log message of
the openstack/step_allocate_ip.
Remove usage of the deprecated OpenStack Compute service floating IP
management and add methods to work with the OpenStack Networking
service floating IPs API.
Remove usage of the deprecated OpenStack Compute service floating IP
pools and add methods to work with the OpenStack Networking service
external networks API.
Move reusable logic of working with the OpenStack Networking service API
to a separate methods in the networking.go file.
Pass error messages from the API services to the ui messages in the
allocate IP step.
Andrey Kaipov
John-Paul Robinson
Andrei Ozerov