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

auto-check/scripts/dmesg.sh

@@ -0,0 +1,11 @@
+echo '===MONITOR:dmesg==='
+DMESG_ERR=$(dmesg --level=err,crit,alert,emerg 2>/dev/null | tail -30 || true)
+if [ -n "$DMESG_ERR" ]; then
+	echo 'status:fail'
+	echo "output:${DMESG_ERR}"
+else
+	echo 'status:pass'
+	echo 'output:无硬件相关内核报错'
+fi
+echo ''
+echo '===END==='