Clean up Location header in Bucket Response
Clean up Location header in Bucket Response

Response object has 'location' property so this allows
to use that property insetead of headers dictionary.

Change-Id: I26cb0815f3a8699de68ea505844ba2f99804fcac

swiftstack/swift3-stackforge,stackforge/swift3,tumf/swift3,KoreaCloudObjectStorage/swift3,swiftstack/swift3-stackforge,KoreaCloudObjectStorage/swift3,tumf/swift3,stackforge/swift3