Ethernet VPN (EVPN_RT5) Enhancement to SNAT_HA
This code review (4th Review) is part of EVPN_RT5 enhancement to NAT
Feature.
This code changes is responsible for SNAT HA during NAPT Switch
down/restart scenario
1) Remove all the SNAT flows from old NAPT switch
2) Install all the SNAT flows on newly elected NAPT switch
Note: This review is dependent on below review
https://git.opendaylight.org/gerrit/#/c/51338/
Change-Id: I4201096772af11b111f7387bb1bfce1535ee0ca5
Signed-off-by: karthikeyan <karthikeyan.k@altencalsoftlabs.com>