support lograge as well as hodel 3000

[josephholsten]

by tying into config.lograge.custom_options to pull from oink's instrumentation

[noahd1]

Seems reasonable, I would accept a patch for it. Note though that it's not just the logging that would need to change - log parsing would also need to be able to read logs in lograge format.

[mperham]

+1 to this. Seems like more people are moving to key=value pairs in Rails request production logging.