test/security: check session stats
test/security: check session stats

Add unit tests for rte_security_session_stats_get function.

Signed-off-by: Lukasz Wojciechowski <a2d89656bbb2a6e8a64a294f13639c7f6683f95e@partner.samsung.com>
Acked-by: Akhil Goyal <74d7c4c993a22c1d4f60c46ff3d95c969a24a25c@nxp.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk