Force download of new Kibana tarball

Earlier commit a44090a13 did not work on preview. This was due to the fact
that the archive resource had the same name so puppet skipped over
downloading the new tarball. Giving the archive resource a name that
includes the version forces a new download to take place.
Remove old Kibana version

The old installed version of Kibana is not removed by default. This does
that.
Merge pull request #367 from alphagov/upgrade-kibaba

Fix the upgrade of Kibana