In container, the process cannot be terminated by SIGINT/SIGTERM when
execute with 'stats-period' option.
Fixed by adding a flag to exit stats period loop after received either
SIGINT or SIGTERM.
Fixes: cfea1f3048d1 ("app/testpmd: print statistics periodically")
Cc: stable@dpdk.org
Signed-off-by: Phil Yang <phil.yang@arm.com>
Acked-by: Jianbo Liu <jianbo.liu@linaro.org>
d9a191a00e