Add a NullHandler when setting up library logging
Add a NullHandler when setting up library logging

I was gunna write a test, but mocking ImportErrors is a PITA, so I decided to
just get my tox py26 working instead.  Tests seem to fail/pass as expected
without/with the inline NullHanlder.

Closes-Bug: 1212861

Change-Id: I20207374a77ee9969ab201c3a57e4caf40c02a61

openstack/python-swiftclient,jeseem/python-swiftclient,JioCloud/python-swiftclient,openstack/python-swiftclient,iostackproject/IO-Bandwidth-Differentiation-Client,ironsmile/python-swiftclient,citrix-openstack/build-python-swiftclient,ironsmile/python-swiftclient,VyacheslavHashov/python-swiftclient,JioCloud/python-swiftclient,pratikmallya/python-swiftclient,krnflake/python-hubicclient,jeseem/python-swiftclient,zackmdavis/python-swiftclient,varunarya10/python-swiftclient,citrix-openstack-build/python-swiftclient,sohonetlabs/python-swiftclient,citrix-openstack/build-python-swiftclient,citrix-openstack-build/python-swiftclient,citrix-openstack/build-python-swiftclient,pratikmallya/python-swiftclient,iostackproject/IO-Bandwidth-Differentiation-Client,zackmdavis/python-swiftclient,varunarya10/python-swiftclient,sohonetlabs/python-swiftclient,VyacheslavHashov/python-swiftclient