Read system type from configuration

src/freedombone

   fi
 
   if [ -f $CONFIGURATION_FILE ]; then
+      if grep -q "SYSTEM_TYPE" $CONFIGURATION_FILE; then
+          SYSTEM_TYPE=$(grep "SYSTEM_TYPE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
+      fi
       if grep -q "SSL_PROTOCOLS" $CONFIGURATION_FILE; then
           SSL_PROTOCOLS=$(grep "SSL_PROTOCOLS" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
       fi