Fedora and Debian don't use Upstart files.

* modules/puppetboot/manifests/init.pp: The Upstart conf file will
fail to apply on systems which lack an /etc/init directory, such as
Fedora or Debian.

Change-Id: Ibefe69fd30c9c7e0320705276e151472e581d878
Reviewed-on: https://review.openstack.org/34082
Reviewed-by: Dan Prince <dprince@redhat.com>
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Approved: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins