* Always cleanup admin endpoint first
* Error out if no config has been set (#2833)
* Ignore explicitly missing admin config (#2833)
* Separate config loading from admin initialization (#2833)
* Add admin option to specify admin listener address (#2833)
* Use zap for reporting admin endpoint status
* logging: Initial implementation
* logging: More encoder formats, better defaults
* logging: Fix repetition bug with FilterEncoder; add more presets
* logging: DiscardWriter; delete or no-op logs that discard their output
* logging: Add http.handlers.log module; enhance Replacer methods
The Replacer interface has new methods to customize how to handle empty
or unrecognized placeholders. Closes#2815.
* logging: Overhaul HTTP logging, fix bugs, improve filtering, etc.
* logging: General cleanup, begin transitioning to using new loggers
* Fixes after merge conflict
* cli: Change command structure, add help subcommand (#328)
* cli: improve subcommand structure
- make help command as normal subcommand
- add flag usage message for each command
* cmd: Refactor subcommands and command line help; make commands pluggable