Pecan's debug mode can be terribly insecure; 500 errors return a
Python traceback, the full list of environment variables, and a
button to replay the request with a breakpoint.
Deployers often run OpenStack services in debug mode; doing so should
not open the service up to these flaws. Defaulting pecan_debug to
CONF.debug makes this easy to accidentally do. So, default it to False
rather than riding on top of CONF.debug.
Change-Id: I70f9c9807d16aa50df4d5e16ba2a29575f8b165e
Closes-Bug: #1425206
DocImpact
b2a21fba08