CLI references are shared guides

Move CLI sections to common as they are shared between user guide, admin
user guide, and config reference guide. Update the appendix (which was
already in common) to refer to the new location.

Change-Id: Id51aacea15ce70a90e1a49203665b2797d374e48

doc/common/app_command_reference.xml

@@ -16,24 +16,24 @@
         xml:id="nova_summary" label="A">
         <title>Command reference</title>
         <xi:include
-                href="../user-guide/section_keystone_cli_commands.xml"/>
+                href="section_keystone_cli_commands.xml"/>
         <?hard page-break?>
         <xi:include
-                href="../user-guide/section_glance_cli_commands.xml"/>
+                href="section_glance_cli_commands.xml"/>
         <?hard page-break?>
         <xi:include
-                href="../user-guide/section_neutron_cli_commands.xml"/>
+                href="section_neutron_cli_commands.xml"/>
         <?hard page-break?>
         <xi:include
-                href="../user-guide/section_nova_cli_commands.xml"/>
+                href="section_nova_cli_commands.xml"/>
         <?hard page-break?>
         <xi:include
-                href="../user-guide/section_cinder_cli_commands.xml"/>
+                href="section_cinder_cli_commands.xml"/>
         <?hard page-break?>
         <xi:include
-                href="../user-guide/section_swift_cli_commands.xml"/>
+                href="section_swift_cli_commands.xml"/>
         <?hard page-break?>
         <xi:include
-                href="../user-guide/section_heat_cli_commands.xml"
+                href="section_heat_cli_commands.xml"
         />
 </appendix>