Import failure error does not appear in logfile

[Lorin Hochstein]

If you try to run keystone and the passlib Python package isn't there, the error message appears on standard error instead of the log file:

$ sudo -u keystone /usr/bin/keystone --config-file=/etc/keystone/keystone.conf --log-file=/var/log/keystone/keystone.log
ERROR: Unable to load keystone-legacy-auth from configuration file /etc/keystone/keystone.conf.
Got: ImportError('No module named passlib.hash',)

This makes debugging more difficult if keystone is started in an init script, since this error message doesn't get logged anywhere.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/2698

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/2698
Committed: http://github.com/openstack/keystone/commit/105b90844af9ddd7bb25dab886a70c4887c66766
Submitter: Jenkins
Branch: master

commit 105b90844af9ddd7bb25dab886a70c4887c66766
Author: Ziad Sawalha <email address hidden>
Date: Fri Dec 30 13:06:36 2011 -0600

    Front-end logging

    - Added logging to Front-end components
    - Replaced console logging with log info events
    - Addresses some of bug 900451 (import exception
      mentioned will get logged to logger, but logger
      is not yet initialized by that time)
    - blueprint keystone-logging

    Change-Id: I1dce90b9876d7bc26c090d757b44f7321bc32f9d