Refactoring Glance logging lowering levels

This change fixes translations to be using correct translation functions.
Contains few log level drops for too high logging levels.

This PS does not address logging changes for modules under glance/store/
due to the new repo request. After stores are moved to their own repo
new PS will be submitted for those.

This PS does not touch the test code.

Separate PS will be submitted for log lever raises withing codebase
as requested during the spec review.

Related to bp refactoring-glance-logging

Change-Id: I683c35face8d5b7056ef7fedcd75deb63dbbf8e2
Merge "Refactoring Glance logging lowering levels"