Add a pipelining example

Signed-off-by: Allen Zhu <allenzhu@nvidia.com>

Add license to DV signature example source file

Signed-off-by: Evgeniy Kochetov <evgeniik@nvidia.com>

Add example how to corrupt data or PI and how to decode sig err

Signed-off-by: Allen Zhu <allenz@mellanox.com>

Alpha version 1 for HuaWei, redmine 2259475

README.md: Add example how to fetch submodules

Signed-off-by: Sasha Kotchubievsky <sashakot@mellanox.com>