[config] Log config values on startup
[config] Log config values on startup

Now we should be able to see the config at startup in the logs.
This should help us debug issues and see things like ChainId.

Log whole config

Closes: #5486

aptos-labs/aptos-core,libra/libra,libra/libra,aptos-labs/aptos-core,libra/libra,aptos-labs/aptos-core,aptos-labs/aptos-core,libra/libra,aptos-labs/aptos-core,libra/libra,aptos-labs/aptos-core,aptos-labs/aptos-core