This involved a huge amount of cleanup to existing code
in order to make sure that existing failures were properly
fixed or silenced when intentional.
Additionally, this introduces a set of pre-built exception
instances for test purposes which are marked with the
"silence_logging" attribute to denote expected failures which
should not be logged in test output.
Change-Id: I6b420382dcdc5792c7be4d727853f438154c641e
856983fbcd