[Docs] Update manage networks location

To be consistent with other "manage x" operations, the management
of networks is moved into the general openstack operations.

Change-Id: I828bbfc49ec23b661af26b314830d495f786ea22

doc/source/admin/maintenance-tasks.rst

@@ -8,7 +8,6 @@ maintenance tasks.
 .. toctree::
    :maxdepth: 2
 
-   maintenance-tasks/network-maintain.rst
    maintenance-tasks/galera.rst
    maintenance-tasks/rabbitmq-maintain.rst
    maintenance-tasks/backups.rst

doc/source/admin/openstack-operations.rst

@@ -2,7 +2,7 @@
 Managing your cloud
 ===================
 
-This chapter is intended to document basic OpenStack operations tasks that
+This chapter is intended to document OpenStack operations tasks that
 are integral to the operations support in an OpenStack-Ansible deployment.
 
 It explains operations such as managing images, instances, or networks.
@@ -10,3 +10,4 @@ It explains operations such as managing images, instances, or networks.
 
 .. include:: openstack-operations/managing-images.rst
 .. include:: openstack-operations/managing-instances.rst
+.. include:: openstack-operations/managing-networks.rst

doc/source/admin/openstack-operations/managing-networks.rst

@@ -1,6 +1,5 @@
-======================
-Networking maintenance
-======================
+Managing networks
+=================
 
 Operational considerations, like compliance, can make it necessary to
 manage networks. For example, adding new provider networks to the
@@ -159,11 +158,6 @@ removed, prior to the removal of the OpenStack-Ansible configuration.
       # openstack-ansible lxc-containers-create.yml --limit infra03:infra03-host_containers
       # openstack-ansible os-neutron-install.yml --tags neutron-config
 
-
-Move from  Open vSwitch to LinuxBridge and vice versa
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-
 Restart a Networking agent container
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~