Provides one-click associate and disassociated actions when in
"simple" floating IP management mode. Complex floating IP
management is still allowed via the access & security panel,
but in general it's not necessary except when managing multiple
floating IP pools or with complex network requirements.
Implements blueprint associate-ip-one-click.
Change-Id: Iaa9333b4f9a0c1590fcee50d1e56fcbaa21a84dc
13e5c15387