PEP8 issues fixed
PEP8 issues fixed

1. Have a better indent in doc/source/conf.py
2. Fix an import issue

Change-Id: I5811c195157706d2a85c0fd47666e67f94b2c558

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