I always get tripped up when I'm editing code that catches
AttributeError and does something with it. I'll type "req.emthod" or
something, and next thing I know I'm getting 405s in all my unit
tests. This diff removes some places where we catch AttributeError
(sometimes, having deliberately thrown it only one line before) so
that typos can crash the way Guido intended.
Change-Id: I2f7586f96b41a97e6ae254efc83218b3b5c6cc9e
3944d82038