Install and configure for Red Hat Enterprise Linux and CentOS in python-watcher

[puthi]

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Release: 3.0.2.dev4 on 2017-07-03 15:31:10
SHA: 70a24cb009e3318c55ca94727f5f6325dc3c8db6
Source: https://opendev.org/openstack/watcher/src/doc/source/install/install-rdo.rst
URL: https://docs.openstack.org/watcher/train/install/install-rdo.html