log.py imports notifier which has tons of dependencies

[Flavio Percoco]

Oslo.log imports notfier which has tons of dependencies. Since it is used just for PublishErrorsHandler which is used when `publish_errors` is set, I think it would be better to have it optional and / or move it to a separate module.

# marconi/openstack/common/context.py
# marconi/openstack/common/eventlet_backdoor.py
# marconi/openstack/common/excutils.py
# marconi/openstack/common/gettextutils.py
# marconi/openstack/common/jsonutils.py
# marconi/openstack/common/local.py
# marconi/openstack/common/log.py
# marconi/openstack/common/loopingcall.py
# marconi/openstack/common/network_utils.py
# marconi/openstack/common/notifier/
# marconi/openstack/common/processutils.py
# marconi/openstack/common/rpc/
# marconi/openstack/common/service.py
# marconi/openstack/common/threadgroup.py
# marconi/openstack/common/uuidutils.py

[Mark McLoughlin (markmc)]

Agree, we need to fix this. We just hit this here too: https://review.openstack.org/28868

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/29081

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/29081
Committed: http://github.com/openstack/oslo-incubator/commit/b135234079d0b01791f71568d4515ee828a96686
Submitter: Jenkins
Branch: master

commit b135234079d0b01791f71568d4515ee828a96686
Author: Davanum Srinivas <email address hidden>
Date: Tue May 14 08:39:36 2013 -0400

    Remove the notifier and its dependencies from log.py

    Move the code related to the publish error handler out of the
    log module so its easier for other projects to consume it

    Fixes LP #1179528

    Change-Id: Ibf28ba17f81b5ddeda653f6a3501ecac18ffcd42