ts_mon_config: Quiet googleapiclient logging

google-api-client produces somewhat noisey logging - it creates an
INFO-level log message every time it makes a URL request in its
"createMethod" and "createNextMethod" functions. This change sets its
logger's level to logging.WARNING to silence those messages.  Also, this
change corrects the function names in chromite.lib.ts_mon_config to
match the style guide.

BUG=chromium:584776
TEST=Tested the logger in the interpreter.

Change-Id: I409e4a8945e95748382c00dc10da541a91d487ad
Reviewed-on: https://chromium-review.googlesource.com/326351
Commit-Ready: Paul Hobbs <phobbs@google.com>
Tested-by: Paul Hobbs <phobbs@google.com>
Reviewed-by: Aviv Keshet <akeshet@chromium.org>
2 files changed