lots of changes in code for ssl client

load-iot-key.sh

@@ -2,6 +2,12 @@
 set -e
 
 CPU_SERIAL=$(awk '/Serial/ {print $3}' /proc/cpuinfo)
+
+# Fallback if CPU_SERIAL is empty
+if [[ -z "$CPU_SERIAL" ]]; then
+  CPU_SERIAL="999999999999"
+fi
+
 KEK=$(echo -n "$CPU_SERIAL" | \
       openssl dgst -sha256 -hmac "server-provided-salt" | \
       awk '{print $2}')