Updated test_shell for Python3
Updated test_shell for Python3

Change-Id: Ia76e544fa6e0a222c260191a1ab74939078ed2fb

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