Updated openstack/openstack
Project: openstack/keystone  074fc90599033628f853b10c4c3248a29b987314
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Doc - Keystone configuration - moving RBAC section

Moved the `Keystone API protection with RBAC` section between sections
`Configuration files` and `Adding Extensions`. It makes sense, since
it documents the `policy.json` file. This section was previously a
subsection of `Adding Users, Tenants, and Roles with
python-keystoneclient`.

Change-Id: I554f357c40666e67356e176ff82d057894e8bfe5