autosynth cannot find the source of changes triggered by earlier changes in this
        repository, or by version upgrades to tools such as linters.

* fix: consolidate logging setup

When switching autosynth to use synthtool's git module, we transitively
load synthtool's logger setup which adds a log handler globally. This
causes logs to be emitted twice (with 2 different styles).

This consolidates the logging setup into a single helper and now both
autosynth's and synthtool's logger instance use the same configuration
(with different logger names).

* fix: add the level name when the log isn't colorize

Source-Author: Jeff Ching <chingor@google.com>
Source-Date: Tue May 12 15:53:43 2020 -0700
Source-Repo: googleapis/synthtool
Source-Sha: c585ac3b5eff5cd2097a5315ffd9cf4823cc1ed2
Source-Link: googleapis/synthtool@c585ac3

PiperOrigin-RevId: 311601348

Source-Author: Google APIs <noreply@google.com>
Source-Date: Thu May 14 14:03:19 2020 -0700
Source-Repo: googleapis/googleapis
Source-Sha: 2433bd50656264a2ef9f684bf646fb4d250d39ff
Source-Link: googleapis/googleapis@2433bd5

feat: reload information in the Document resource
BREAKING CHANGE: additional long-running operation annotations
BREAKING CHANGE: some existing request fields are now explicitly required
BREAKING CHANGE: the order of the Session resource patterns has changed

PiperOrigin-RevId: 312345206

Source-Author: Google APIs <noreply@google.com>
Source-Date: Tue May 19 13:46:01 2020 -0700
Source-Repo: googleapis/googleapis
Source-Sha: 7a8875d4bcf51993f6f7aa181066cc5ec95539d5
Source-Link: googleapis/googleapis@7a8875d

PiperOrigin-RevId: 312689208

Source-Author: Google APIs <noreply@google.com>
Source-Date: Thu May 21 10:00:47 2020 -0700
Source-Repo: googleapis/googleapis
Source-Sha: dec3204175104cef49bf21d685d5517caaf0058f
Source-Link: googleapis/googleapis@dec3204

PiperOrigin-RevId: 313202929

Source-Author: Google APIs <noreply@google.com>
Source-Date: Tue May 26 09:12:28 2020 -0700
Source-Repo: googleapis/googleapis
Source-Sha: f563b1dffee42be2f61c326c39af4974c1984278
Source-Link: googleapis/googleapis@f563b1d

…sset into autosynth-googleapis