Change snowflake proxy log verbosity
We've had a few operators of the standalone snowflake proxy approach us thinking that their proxy is not working because they are not seeing any logs.
Right now, the proxy will output nothing unless the
-verbose argument is given. I'm thinking we can change this to log just a very few things by default:
- the starting message
- the NAT type
- the periodic metrics
and leave everything else as verbose logging.