selftests/net: convert test_bridge_neigh_suppress.sh to run it in unique namespace
Here is the test result after conversion.
]# ./test_bridge_neigh_suppress.sh
Per-port ARP suppression - VLAN 10
----------------------------------
TEST: arping [ OK ]
TEST: ARP suppression [ OK ]
...
TEST: NS suppression (VLAN 20) [ OK ]
Tests passed: 148
Tests failed: 0
Acked-by: David Ahern <dsahern@kernel.org> Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Tested-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>