[mos-xenial] "fuel-rabbit-fence" init scripts packaging is inconsistent

[Dmitry Burmistrov]

Detailed bug description:
 Package "fuel-rabbit-fence" is built for ubuntu (debian/) & rhel (.spec), but each distro gets different init configuration:
  - ubuntu: upstart & systemd
  - rhel: old-style init.d script

 I think for both os families we should provide systemd unit. We also can provide alternitive init.
 And for all init systems we should provide proper package dependencies (debian/control, Require in spec).
Steps to reproduce:
 Take latest packages, list their files and read "control" information.
Expected results:
 1) Systemd unit is provided for deb/rpm
 2) Other init "scripts" provided for old distro releases
 3) systemd and other init systems are placed in dependency fields in packaging manifests
 4) packages follows all rules above.
Actual result:
 Systemd is absent in deb dependencies.
 systemd unit is absent in rpm.
Reproducibility:
 -
Workaround:
 -
Impact:
 -
Description of the environment:
 Operation system: Ubuntu 16.04
 Versions of components: -
 Reference architecture: -
 Network model: -
 Related projects installed: -
Additional information:
 -

[Fuel Devops McRobotson (fuel-devops-robot)]

Fix proposed to branch: master
Change author: Alexander Tsamutali <email address hidden>
Review: https://review.fuel-infra.org/23391

[Fuel Devops McRobotson (fuel-devops-robot)]

Reviewed: https://review.fuel-infra.org/23391
Submitter: Pkgs Jenkins <email address hidden>
Branch: master

Commit: 1425114a60026ab6440dec856a9a338e2ab96872
Author: Alexander Tsamutali <email address hidden>
Date: Mon Aug 1 18:43:48 2016

Start rabbit-fence from systemd

- Remove Upstart job from Xenial package.
- Add systemd unit instead of SysV init script in CentOS package.

Change-Id: I8ef3a1bc910c922a9880f2706b379bbcc1f71f85
Closes-Bug: #1583609