Bug 2036 - Adding code to parse dummy neutron port assigned for the VIP

In case you wish to use the LB instance within a subnet without assigning
a floating IP, then you need to add a dummy neutron port to the subnet and
use the IP assigned to that as the VIP. The patch will pick that up and use
it in the reverse traffic rules.

Change-Id: I3e973cfe747c5c1dcb0e639734cdb291ac23210b
Signed-off-by: Srini Seetharaman <srini.seetharaman@gmail.com>
Merge "Bug 2036 - Adding code to parse dummy neutron port assigned for the VIP"