2b03057b91
The new mode allows changing the config for a period of time, which allows trying the configuration and automatically rolling it back in case if it doesn't work for example. The mode can only be used with changes that can be applied without a reboot. When changed it doesn't write the configuration to disk, only changes it in memory. `--timeout` parameter can be used to customize the rollback delay. The default timeout is 1 minute. Any consequent configuration change will abort try mode and the last applied configuration will be used. Signed-off-by: Artem Chernyshev <artem.chernyshev@talos-systems.com>