[Docs] Promote scale the environment

Scale the environment deserves its own chapter.
On top of that, the managing swift section is
about how scaling is done with swift clusters
(Multi-Region handling), and therefore should
be moved into scaling the environment.

Change-Id: I3a37bfefb53e229278c7ec08a8acde63614949ed

doc/source/admin/index.rst

@@ -21,7 +21,8 @@ more complex operations like upgrading.
    openstack-firstrun.rst
    openstack-operations.rst
    maintenance-tasks.rst
-   monitor-environment/monitoring-systems.rst
+   scale-environment.rst
+   monitoring-systems.rst
    troubleshooting.rst
    advanced-config.rst
    ref-info.rst

doc/source/admin/maintenance-tasks.rst

@@ -11,8 +11,6 @@ maintenance tasks.
    maintenance-tasks/galera.rst
    maintenance-tasks/rabbitmq-maintain.rst
    maintenance-tasks/backups.rst
-   maintenance-tasks/scale-environment.rst
    maintenance-tasks/ansible-modules.rst
-   maintenance-tasks/managing-swift.rst
    maintenance-tasks/containers.rst
    maintenance-tasks/firewalls.rst

doc/source/admin/scale-environment.rst

@@ -400,3 +400,5 @@ Destroying Containers
 
    The lxc_hosts host group must be included as the playbook and roles executed require the
    use of facts from the hosts.
+
+.. include:: scaling-swift.rst

doc/source/admin/scaling-swift.rst

@@ -1,10 +1,3 @@
-============================================
-Managing Object Storage for multiple regions
-============================================
-
-This is a draft Object Storage page for the proposed OpenStack-Ansible
-operations guide.
-
 Accessibility for multi-region Object Storage
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~