Set custom values on node

[afalaleev]

Currently, all scripts copy config.ini to /etc/cyberway/config.ini and add p2p nodes to it.
But config.ini can contain custom settings and they will be lost on each updating.

We should get user settings from /etc/cyberway/predefined.ini.

Steps in scripts:

• Copy config.ini
• Add p2p nodes to it
• Add user settings from /etc/cyberway/predefined.ini