Updated openstack/openstack
Project: openstack/python-swiftclient  21db1bf83670f284b8f3d1dab4dc2be548ffb57e
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Python 3: Get compatible types from six

* Replace unicode with six.text_type
* Replace basestring with six.string_types
* The long type doesn't exist in Python 3 anymore: replace 1L with long(1) and
  only test this type with Python 2
* Fix quote(): quote the URL if the string is a byte string. Use "bytes" type
  instead of "str" to be Python 3 compatible.

Change-Id: I1df5aa85e4e7d07191fb5c654d52fc4bd8b9f440