* Update Go client libraries for etcd
* Added etcd server container to run etcd3 tests automatically.
* Removed etcd2 test case: it fails the backend tests but the failure is
unrelated to the uplift. The etcd2 backend implementation does not
remove empty nested nodes when removing leaf (see comments in #11980).
* logbridge with hclog and identical output
* Initial search & replace
This compiles, but there is a fair amount of TODO
and commented out code, especially around the
plugin logclient/logserver code.
* strip logbridge
* fix majority of tests
* update logxi aliases
* WIP fixing tests
* more test fixes
* Update test to hclog
* Fix format
* Rename hclog -> log
* WIP making hclog and logxi love each other
* update logger_test.go
* clean up merged comments
* Replace RawLogger interface with a Logger
* Add some logger names
* Replace Trace with Debug
* update builtin logical logging patterns
* Fix build errors
* More log updates
* update log approach in command and builtin
* More log updates
* update helper, http, and logical directories
* Update loggers
* Log updates
* Update logging
* Update logging
* Update logging
* Update logging
* update logging in physical
* prefixing and lowercase
* Update logging
* Move phyisical logging name to server command
* Fix som tests
* address jims feedback so far
* incorporate brians feedback so far
* strip comments
* move vault.go to logging package
* update Debug to Trace
* Update go-plugin deps
* Update logging based on review comments
* Updates from review
* Unvendor logxi
* Remove null_logger.go
Tero Saarni