Make cisco_router script patch neutron_legacy script
Make cisco_router script patch neutron_legacy script

The community devstack code that determines the gateway IP is not
compatible with the cisco router plugin. This patch changes
devstack during stacking so that the gateway IP is determined
correctly.

Change-Id: I7ca8da200593c7b2f0d6780d642388252cb649c5

CiscoSystems/networking-cisco,CiscoSystems/networking-cisco