Update
When to update
- Update sskcp service scale
 - Update dns-proxy port range
 - Update sskcp service key or port
 
How to update
The most simple way to update configuration is using update, which will change the default INFO in power-server/server and restart all services 
make update
Note that info can also be provided to update, like below:
make update INFO=/path/to/info
Check status and configuration after updating
Check whether configuration updated
make showconfCheck status of running services
make test_state