Consistent logger instantiation

[Brian Waldon]

Let's standardize on

LOG = logging.getLogger(__name__)

for logger instantiation and document it in HACKING.rst.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/8762

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/8762
Committed: http://github.com/openstack/glance/commit/4363af6cc81e4bc63fb39fae7b059ca3defaabe0
Submitter: Jenkins
Branch: master

commit 4363af6cc81e4bc63fb39fae7b059ca3defaabe0
Author: Brian Waldon <email address hidden>
Date: Wed Jun 20 10:33:43 2012 -0700

    Standardize logger instantiation

    Use LOG for variable name and __name__ for logger name. Also
    document this fact in HACKING.rst

    Fixes bug 1015685

    Change-Id: I0d9d80bef66197a28ed3d650f17859202048d776