Added syncd SAI dump to sysdump script

Author: andrii savka

scripts/generate_dump

@@ -285,6 +285,14 @@ main() {
     save_redis "2" "COUNTERS_DB"
 
     save_cmd "docker exec -it syncd saidump" "saidump"
+    
+    local platform="$(/usr/local/bin/sonic-cfggen -v platform)"
+    if [[ $platform == *"mlnx"* ]]; then
+        local sai_dump_filename="/tmp/sai_sdk_dump_$(date +"%m_%d_%Y_%I_%M_%p")"
+        docker exec -it syncd saisdkdump -f $sai_dump_filename
+        docker cp syncd:$sai_dump_filename /tmp/
+        save_file $sai_dump_filename sai_sdk_dump true
+    fi
 
     $RM $V -rf $TARDIR
     $MKDIR $V -p $TARDIR