Case Studies - Moving Identity case studies into Identity chapter

Currently chapter 10 is the case study for identity management, and
this will move it into the end of chapter 6 (Identity), and adding
the new section_ file included in identity chapter file.

Change-Id: I8984e20e66896734d679b12db6207add062bdeeb
Partial-Bug: #1349540

security-guide/bk-openstack-security-guide.xml

@@ -110,7 +110,6 @@
     <xi:include href="ch_dashboard.xml"/>
     <xi:include href="ch_compute.xml"/>
     <xi:include href="ch_object-storage.xml"/>
-    <xi:include href="ch_case-studies-identity-management.xml"/>
     <xi:include href="ch_networking.xml"/>
     <xi:include href="ch_messaging.xml"/>
     <xi:include href="ch_data_processing.xml"/>

security-guide/ch_identity.xml

@@ -25,5 +25,6 @@
   <xi:include href="section_identity-future.xml"/>
   <xi:include href="section_identity-federated-keystone.xml"/>
   <xi:include href="section_identity-checklist.xml"/>
+  <xi:include href="section_case-studies-identity-management.xml"/>
 
 </chapter>

security-guide/section_case-studies-identity-management.xml

@@ -1,18 +1,16 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<chapter xmlns="http://docbook.org/ns/docbook"
+<section xmlns="http://docbook.org/ns/docbook"
   xmlns:xi="http://www.w3.org/2001/XInclude"
   xmlns:xlink="http://www.w3.org/1999/xlink"
   version="5.0"
   xml:id="case-studies-identity-management">
-  <?dbhtml stop-chunking?>
     <title>Case studies: Identity management</title>
     <para>
       Earlier in <xref linkend="introduction-to-case-studies"/> we introduced
       the Alice and Bob case studies where Alice is deploying a private
       government cloud and Bob is deploying a public cloud each with
       different security requirements. Here we discuss how Alice and Bob would address
-      configuration of OpenStack core services. These include the
-      Identity service, dashboard, and Compute services. Alice will be
+      configuration of the OpenStack Identity service. Alice will be
       concerned with integration into the existing government
       directory services, while Bob will need to provide access to the
       public.
@@ -66,4 +64,4 @@
       <para>Bob decides to use VNC for his virtual console for its
       maturity and security features.</para>
     </section>
-  </chapter>
+  </section>