py3: Clean up some needlessly-noisy tracebacks
py3: Clean up some needlessly-noisy tracebacks

Change-Id: I5b391664b9260c762bd122a92387084c0582a362
Related-Change: I5f3bc6416207cab2c7e3a77ee6689360b55990e7

tipabu/swift,tipabu/swift,openstack/swift,swiftstack/swift,swiftstack/swift,openstack/swift,swiftstack/swift,tipabu/swift,openstack/swift,openstack/swift,tipabu/swift