Updated openstack/openstack
Project: openstack/python-ceilometerclient  339b55c319f0f7cbd2a8025d4eff47351d66a997

replace dict.iteritems() with six.iteritems(dict)

According to https://wiki.openstack.org/wiki/Python3 dict.iteritems()
should be replaced with six.iteritems(dict).

Change-Id: I52cc0e89c030d7b6bfc735239638b513410933c5