fix opts.list_opts for polling options
fix opts.list_opts for polling options

After running `tox -egenconfig`, in etc/ceilometer/ceilometer.conf,
batch_polled_samples & shuffle_time_before_polling_task appears
for three times, while partitioning_group_prefix doesn't show up.

This is because we specify those options in a wrong way in
``opts.list_opts``, for partitioning_group_prefix, it is a typo
which reference the wrong option list, while for the rest two,
we should not add them to list_opt and comment they are deprecated,
oslo.config has already provided a field named deprecated_group.

This patch corrects them into the proper place.

Change-Id: I88c475aab1b76b38cadaa4275907443880464948
Closes-Bug: #1579089

openstack/ceilometer,ityaptin/ceilometer,ityaptin/ceilometer,openstack/ceilometer