oslo.test changes default log level to info

[Marc Koderer]

Problem:
-----------
If OS_DEBUG is not set the root logger will be set to level INFO.
But the default value of the root logger is usually WARN.
See http://hg.python.org/cpython/file/2.7/Lib/logging/__init__.py#l1490

This can cause problems with mocking "time.time" see:
https://bugs.launchpad.net/tempest/+bug/1320482

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/94176

[Ben Nemec (bnemec)]

Even with the fix proposed, don't we still have the mocking problem if someone sets OS_DEBUG? It would be bad if tests passed in non-debug and then failed when debug is enabled. :-/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/94176
Committed: https://git.openstack.org/cgit/openstack/oslo.test/commit/?id=47f869c3f51bfbacf11596ee86212a5e13d3c2ce
Submitter: Jenkins
Branch: master

commit 47f869c3f51bfbacf11596ee86212a5e13d3c2ce
Author: Marc Koderer <email address hidden>
Date: Mon May 19 13:55:56 2014 +0200

    Set log level to default value

    Instead of setting the log level hard coded to INFO just let the used
    logger module decide which level is the default. Otherwise a usage
    of this module will change the log level globally to INFO which is not
    the default for the python logger module (see
    http://hg.python.org/cpython/file/2.7/Lib/logging/__init__.py#l1490)

    Change-Id: I75a0517564e6829dfc1451c77da888548ad2219c
    Closes-bug: 1320841

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/95411

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/95411
Committed: https://git.openstack.org/cgit/openstack/oslotest/commit/?id=289d1dab8d3afa88451571ba8fe35e9b3f1aff51
Submitter: Jenkins
Branch: master

commit 289d1dab8d3afa88451571ba8fe35e9b3f1aff51
Author: Marc Koderer <email address hidden>
Date: Mon May 26 08:09:37 2014 +0200

    Add known issue about time.time mocking

    Since the log level may change by setting the environment variable
    OS_DEBUG a hint is added into the base class.

    Change-Id: I351e2c59fe75c14dba398cb734a9648650c26074
    Closes-bug: 1320841