sonic: Add support for BGP IPv6 neighbors on VLAN

[osfrickler]

The current code only checks for IPv4 addresses, we also need to support IPv6 here.

python-osism/osism/tasks/conductor/sonic/config_generator.py

Lines 1326 to 1331 in 58ac59e

	# Get peer IP address using the existing FHRP VIP detection logic
	peer_ipv4 = None
	if netbox:
	peer_ipv4 = get_connected_interface_ipv4_address(
	device, sonic_iface_name, netbox
	)