See https://storjlabs.atlassian.net/browse/SM-752
These changes allow us to change the log level at runtime through a handler off of the debug endpoint.
Examples of changing the log level on storj-sim
To get the current level for the satellite api process:
curl -XGET 'http://127.0.0.1:10009/logging' --header 'Content-Type: text/plain'
To change the log level:
curl -XPUT 'http://127.0.0.1:10009/logging' --header 'Content-Type: text/plain' --data-raw '{"level":"error"}'
Change-Id: I05d164b290929fa06b6d78c01075ee41f8238044
159df8b2e4