Remove misleading error logging on empty binding - EUCA-10072

When a response message is being processed and there is no binding found
for the requested API version we fall back to using the default binding
with the namespace updated to match the request version. The error that
was being logged when this fallback occurred is removed.

EUCA-10072
SimpleWorkflow service local workflow locking for timers - EUCA-10066

Add locking/retries for timer functionality as EUCA-10029 did for the
service.

EUCA-10066