add ip whitelist to robot mitigation

Signed-off-by: jason <liu_yt@neusoft.com>
add robot mitigation test case

Signed-off-by: jason <liu_yt@neusoft.com>
new feature: cookie poisoning
 *) cookie poisoning protection
 *) session mechanism changed to a modern style

Signed-off-by: paulyang <y_y@neusoft.com>
Merge branch 'cookie_poisoning'
bugfix: fix NULL pointer issue in NS Layer while sending log

Signed-off-by: paulyang <y_y@neusoft.com>
auto-test: cookie poisoning

Signed-off-by: paulyang <y_y@neusoft.com>