Simply adds a new -v/--verbose CLI option which configures logging at
the INFO log level. Also changes the debug logging in sync.get() to log
a non-200 HTTP return code, which fixes the Storyboard story 2000084,
where a ValueError was being raised by trying to JSON-decode a non-200
response body.
Change-Id: Ieabc606e0570ddf3d3af67bb926cad79b0e87591
Closes-story: 2000084