refactor(discovery): use ping for discovery and fill MAC via SSH

auto-check/scripts/memnative.sh

@@ -0,0 +1,19 @@
+echo "===TEST:memnative==="
+MEM_SIZE_MB=${AUTOCHECK_MEM_SIZE_MB:-0}
+if [ "$MEM_SIZE_MB" -gt 0 ]; then
+	MEM_ARG="-M ${MEM_SIZE_MB}"
+else
+	M=$(free -m 2>/dev/null | awk '/Mem:/{print int($7*0.6)}' || echo 512)
+	MEM_ARG="-M ${M}"
+fi
+START_TIME=$(date +%s%N)
+set +e
+OUTPUT=$(stressapptest -s "${AUTOCHECK_DURATION:-30}" ${MEM_ARG} -f 0 -v 2>&1)
+EXIT_CODE=$?
+set -e
+END_TIME=$(date +%s%N)
+DURATION_MS=$(( (END_TIME - START_TIME) / 1000000 ))
+if [ "$EXIT_CODE" -eq 0 ]; then echo 'status:pass'; else echo 'status:fail'; fi
+echo "duration:${DURATION_MS}ms"
+echo "output:${OUTPUT}"
+echo ''