[EVPN-MH] Added new APP_L2_NEXTHOP_GROUP_TABLE_NAME table in APPL_DB #952
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Why I did it
Added the new APP_L2_NEXTHOP_GROUP_TABLE_NAME table in APPL_DB, along with support for registering and deregistering raw Netlink messages.
Direct handling of raw Netlink messages is required because libnl3 does not support Next Hop Group (NHG) message processing. Therefore, fdbsyncd needs to decode Kernel NHG messages to update the L2_NEXTHOP_GROUP_TABLE.
Check HLD: sonic-net/SONiC#1702
Signed-off-by: Kishore Kunal [email protected]