Comment 4 for bug 1226003

I've spoken with part of Neutron team and it seems that simple_ip_management won't make it to Neutron soon (or won't make it at all), so I propose implementing kind of 'Disassociate IP' functionality (opposing 'Simple Disassociate IP') in Horizon.

I have the following scenario off the top of my head:
* user presses 'Disassociate IP' button
* he is redirected to horizon:project:access_and_security:floating_ips, where only IPs for a given Instance are shown (not quite sure whether it's possible, but worth a try)
* user disassociates the right IP
* and returns to Instances table manually

According to IRC discussion with Julie Pichon, that scenario seems reasonable, so I'm starting implementing it.