Update proxy.conf example with the latest pipeline

On the section Install and configure the proxy
node, step 4, the proxy.conf is not using the
latest pipeline

It's missing couple of pipelines which are
essential (e.g proxy-logging should
be twice, gatekeeper)

Added the pipeline catch_errors which
handles error and sets a transaction id
for every request

Added gatekeeper to remove private request
and headers which client should not
generate

Added proxy-logging which logs request
made to proxy server (e.g. PUT,GET)

Second proxy-logging pipeline is for
middleware the can return custom response

The pipelines are referenced from swift git
repo's proxy.conf-sample file

Retains the existing authtoken keystoneauth
middleware section

Closes-Bug: 1322126

Change-Id: Iee005b0117ac452c724bc40f1393e97fe66ee8c1
Replace usage of the Latin abbreviation 'etc.'

According to the IBM Style Guide the Latin abbreviation 'etc.'
should be replace.

Change-Id: Ic49d9a7fc2be0972c26650073521d19221cc795b
Replaced 'i.e.' with 'that is'

According to the IBM Style Guide the Latin abbreviation 'i.e.'
should be replace by 'that is'.

Change-Id: I820e22643477bf0617b1f642b0d4e0c4df65e881
Fix some wrong UTF-8 characters

Replace UTF-8 characters with normal characters or entities as
appropriate.

Change-Id: I28f932506fbaff738c3490151ffdcf3d5dc5ae33
Note: The repo still contains UTF-8 characters but those are fine.
Merge "Replaced 'i.e.' with 'that is'"
Merge "Fix some wrong UTF-8 characters"
Merge "Replace usage of the Latin abbreviation 'etc.'"
Unify the XML declaration in all XML files in doc

The XML declaration should be available on the first line
in every XML file and should match the following line:

<?xml version="1.0" encoding="UTF-8"?>

Change-Id: I29b3d4b730d7ff01c89f34b0bef60b74a858de13
Improve install guide keystone users section

Improve the keystone users section of the installation guide
as follows:

1) Clarify use of ADMIN_TOKEN with example.
2) Replace procedures with steps/substeps to reduce bulk.
3) Add example output.
4) Adjust titles.
5) Provide more links to useful topics.

Implements: blueprint installation-guide-improvements

Change-Id: I4b6f30dfd60ba95fc5d4b218c07d5f9cdeaaabc6
Fix typo: UDB -> UDP

s/UDB/UDP/

Note that these strings are not autogenerated, it's ok to change these
files.

Change-Id: I9fdaf3248977c1a854867167f3cf325bcaf1d41e
Closes-Bug: #1338619
Merge "Improve install guide keystone users section"
Merge "Fix typo: UDB -> UDP"
Merge "Update proxy.conf example with the latest pipeline"