This patch does the following things to transfer
"ip fixed add/remove" to "server add/remove fixed ip":
* Add new command "server add/remove fixed ip", and unit
tests and doc.
* Deprecate "ip fixed add/remove" command.
compute/v2/fixedip.py is not removed because the arguments'
positions are different between the new and old commands.
* ip fixed add <network> <server>
server add fixed ip <server> <network>
* ip fixed remove <ip-address> <server>
server remove fixed ip <server> <ip-address>
Change-Id: Ica07ccf92a76c21fd5608ecaff86ff7c4d96f5a0
Implements: blueprint rework-ip-commands
Partial-bug: 1555990
Co-Authored-By: Dean Troyer <dtroyer@gmail.com>
179ebe6d64