Akihiro Motoki d8e204c608 Lower log level of errors due to user requests to INFO
Errors due to bad client requests (e.g., NotFound, BadRequest)
are logged as exception/trace level and it is annoying
from the point of operators' view.
This commit changes the log level for errors due to
user requests (HTTP 4xx errors) to INFO.

Closes-Bug: #1282394
Change-Id: Ic5646333db88ce856f9366e914cf961890d30501
2014-02-25 19:43:14 +09:00
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