Luong Anh Tuan d99353c44d Replace six.iteritems() with .items()
We should avoid using six.iteritems/keys achieve iterators. We can use
dict.items/keys instead, as it will return iterators in PY3 as well.
And dict.items/keys will more readable.

In py2, the performance about list should be negligible, see
https://wiki.openstack.org/wiki/Python3 and
http://lists.openstack.org/pipermail/openstack-dev/2015-June/066391.html

Change-Id: I8cdac1b75918094b9b3acbc65d53d231e86eca19
2016-11-23 12:02:38 +00:00
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