fix logging support under python 2.6
fix logging support under python 2.6

Change-Id: I2badb7a5a8f8f2c49eb29ced5ce2e6c745f20af1
Signed-off-by: Doug Hellmann <8c845c26a3868dadec615703cd974244eb2ac6d1@dreamhost.com>

openstack/stevedore,JioCloud/stevedore,mandeepdhami/stevedore,nelsnelson/stevedore,mandeepdhami/stevedore,citrix-openstack-build/stevedore,varunarya10/stevedore,nelsnelson/stevedore,varunarya10/stevedore,citrix-openstack-build/stevedore,JioCloud/stevedore