[install-guide] move Swift files to the correct location

Partially implements bp installguide-kilo.

Change-Id: Id90aa181973b4726e8a068cf2de7a1e6984f9ff6

doc/install-guide/ch_swift.xml

@@ -11,16 +11,11 @@
     must at least include the Identity service (keystone) prior to
     deploying Object Storage.</para>
   <xi:include href="../common/section_getstart_object-storage.xml"/>
-  <xi:include
+  <xi:include href="section_swift-controller-node.xml"/>
-    href="object-storage/section_swift-controller-node.xml"/>
+  <xi:include href="section_swift-storage-node.xml"/>
-  <xi:include
+  <xi:include href="section_swift-initial-rings.xml"/>
-    href="object-storage/section_swift-storage-node.xml"/>
+  <xi:include href="section_swift-finalize-installation.xml"/>
-  <xi:include
+  <xi:include href="section_swift-verify.xml"/>
-    href="object-storage/section_swift-initial-rings.xml"/>
-  <xi:include
-    href="object-storage/section_swift-finalize-installation.xml"/>
-  <xi:include
-    href="object-storage/section_swift-verify.xml"/>
   <section xml:id="section_swift_next_steps">
     <title>Next steps</title>
     <para>Your OpenStack environment now includes Object Storage. You can