When the extract-ports flag is used, flame extracts the neutron ports
and connects them (according to the other flags) to :
- floating ips
- nova:compute instances
- security groups
- subnets and networks
This allows the exported stack to have the same network configuration as
its source.
When the flag is used in conjunction with --generate-stack-data,
the generated stack data also contains the assocation between
ports and floating IPs.
Change-Id: Id2e406c7aac5457cdef822b78edf7e30bd833a2d
1c858ea907