Replacing dict.iteritems() with dict.items()
Replacing dict.iteritems() with dict.items()

The iteritems() of Python 2 dictionaries has been renamed to items()
to provide compatibility with Python 3.

Change-Id: I6f32c4e00abb19a9316c5e1d014df26b0c6d35f9

NaohiroTamura/python-ironicclient,NaohiroTamura/python-ironicclient,openstack/python-ironicclient,openstack/python-ironicclient