Documentation points to https://trunk.rdoproject.org/centos7-liberty/ but it's no longer there

[David Hill]

Documentation [1] points to https://trunk.rdoproject.org/centos7-liberty/ but it's no longer there

[1] http://docs.openstack.org/developer/tripleo-docs/basic_deployment/basic_deployment_cli.html

Version-Release number of selected component (if applicable):

How reproducible:
Always

Steps to Reproduce:
1. Follow documentation
2.
3.

Actual results:
Can no longer install Linberty

Expected results:
Can still install it or update documentation

Additional info:

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/412565

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/412565
Committed: https://git.openstack.org/cgit/openstack/tripleo-docs/commit/?id=7b15d3986e3a92cc1c12f8fe8b4a34e70a5ff450
Submitter: Jenkins
Branch: master

commit 7b15d3986e3a92cc1c12f8fe8b4a34e70a5ff450
Author: Alex Schultz <email address hidden>
Date: Mon Dec 19 11:19:35 2016 -0700

    Remove Liberty install instructions

    Liberty has reached EOL so we should not support installing it anymore.
    The upgrade instructions for Liberty to Mitaka have been left in the
    documentation.

    Change-Id: Icf4d1d6930a4faa4134864e56c7bf125dec10df5
    Closes-Bug: #1650928