Install and configure in keystone

[谭道桓]

The following (from previous versions of the documentation) should be added to this part of the tutorial, otherwise it will not be able to proceed smoothly afterwards.

Create `/etc/apache2/sites-available/wsgi-keystone.conf`:
'''
Listen 5000
Listen 35357

<VirtualHost *:5000>
    WSGIDaemonProcess keystone-public processes=5 threads=1 user=keystone group=keystone display-name=%{GROUP}
    WSGIProcessGroup keystone-public
    WSGIScriptAlias / /usr/bin/keystone-wsgi-public
    WSGIApplicationGroup %{GLOBAL}
    WSGIPassAuthorization On
    ErrorLogFormat "%{cu}t %M"
    ErrorLog /var/log/apache2/keystone.log
    CustomLog /var/log/apache2/keystone_access.log combined

    <Directory /usr/bin>
        Require all granted
    </Directory>
</VirtualHost>

<VirtualHost *:35357>
    WSGIDaemonProcess keystone-admin processes=5 threads=1 user=keystone group=keystone display-name=%{GROUP}
    WSGIProcessGroup keystone-admin
    WSGIScriptAlias / /usr/bin/keystone-wsgi-admin
    WSGIApplicationGroup %{GLOBAL}
    WSGIPassAuthorization On
    ErrorLogFormat "%{cu}t %M"
    ErrorLog /var/log/apache2/keystone.log
    CustomLog /var/log/apache2/keystone_access.log combined

    <Directory /usr/bin>
        Require all granted
    </Directory>
</VirtualHost>
'''

This bug tracker is for errors with the documentation, use the following as a template and remove or add fields as you see fit. Convert [ ] into [x] to check boxes:

- [ ] This doc is inaccurate in this way: ______
- [x] This is a doc addition request.
- [ ] I have a fix to the document that I can paste below including example: input and output.

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-----------------------------------
Release: 12.0.1.dev18 on 2018-04-21 04:02
SHA: 22af1d9f35c86e9c5bca288c2996be5c19e3cd61
Source: https://git.openstack.org/cgit/openstack/keystone/tree/doc/source/install/keystone-install-ubuntu.rst
URL: https://docs.openstack.org/keystone/pike/install/keystone-install-ubuntu.html

[Lance Bragstad (lbragstad)]

I'm curious what the specific failure is and what the propose changes to the documentation are?