Use py3kcompat.urlutils from oslo instead of six.urllib_parse

Six before 1.4.0 does not provide urllib_parse module, so we need
another solution.

Closes-bug: #1240827
Change-Id: I6b49b80b94028e01da0e3c4930f3e97cd32f73d0
Merge "Use py3kcompat.urlutils from oslo instead of six.urllib_parse"