[docs] Update docs for puppet master installation

[Artur Kaszuba]

We have procedure for install puppet master server, page https://docs.fuel-infra.org/fuel-dev/ci/overview.html

This procedure should be updated to be simpler, propositions for update:
- we should switch to github repository
- we dont need to use review.fuel-infra.org then we dont need to use rsync to copy files from local station, it should contain only steps executed from puppet master server
- the best will be to update script install_puppet_master.sh or create new one which will reduce number of steps executed by user, script could clone, mkdir, symlink etc, in general procedure could look like this:
 - install minimal ubuntu 14.04
 - wget https://raw.githubusercontent.com/fuel-infra/puppet-manifests/master/bin/prepare_puppet_server.sh
 - bash ./prepare_puppet_server.sh

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

Related fix proposed to branch: master
Change author: Mateusz Matuszkowiak <email address hidden>
Review: https://review.fuel-infra.org/14244

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

Reviewed: https://review.fuel-infra.org/14244
Submitter: Igor Shishkin <email address hidden>
Branch: master

Commit: bef9e2619bf8e5ebd7a00a0d71697902407da23c
Author: Mateusz Matuszkowiak <email address hidden>
Date: Tue Dec 8 12:06:48 2015

Modified install_puppet_master script to automate the install process

Added steps which right now are being executed manually for
puppet master deployment. Also this script checks that it
should be executed as 'root' on a newly installed OS.

Change-Id: Idd925f70465747827da0a692009d3e0fe5a53936
Related-Bug: #1510463

[Mateusz Matuszkowiak (mmatuszkowiak)]

Puppet master docs on review: https://review.openstack.org/#/c/254713/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/254713
Committed: https://git.openstack.org/cgit/openstack/fuel-web/commit/?id=9aa4029c781b4547f319724cb432bd51621e5837
Submitter: Jenkins
Branch: master

commit 9aa4029c781b4547f319724cb432bd51621e5837
Author: Mateusz Matuszkowiak <email address hidden>
Date: Tue Dec 29 19:21:49 2015 +0100

    puppet master deployment doc related to Fuel Infra

    Related-Bug: #1510463
    Change-Id: I215611fa592d5b6055d39ade1d67ade6b0903635