Update Djblets 0.10 to use named loggers.

Review Request #8907 — Created April 18, 2017 and updated — Latest diff uploaded

Information

Djblets
master
a7e271b...

Reviewers

A previous change for Djblets 0.9 converted our code to use named
loggers, instead of logging to the root logger. This change builds upon
that to convert all remaining logging statements on 0.10 to also use
named loggers and to test against them.

Unit tests pass.

Checked pyflakes to make sure there weren't typos in the logger calls.