doc: Populate the 'cli' section

Per the spec [1]:

  cli/ – command line tool reference docs, similar to man pages These
  may be automatically generated with cliff's sphinx integration, or
  manually written when auto-generation is not possible.

All of the docs currently found in 'man' fit that category, so those and
those alone are moved. It'll be a great day in the parish when we can
replace all of these with cliff's Sphinx integration.

[1] specs.openstack.org/openstack/docs-specs/specs/pike/os-manuals-migration

Change-Id: I45bed324ec37cfea7c1a574ec06af38e7b875a1c

doc/source/cells.rst

@@ -333,7 +333,7 @@ utilized.
 References
 ~~~~~~~~~~
 
-* `man pages for the cells v2 commands <http://docs.openstack.org/developer/nova/man/nova-manage.html#nova-cells-v2>`_
+* :doc:`nova-manage man page </cli/nova-manage>`
 
 Step-By-Step for Common Use Cases
 =================================
@@ -555,7 +555,7 @@ you did not configure the automatic host discovery as described in step 5 in
 References
 ~~~~~~~~~~
 
-* `man pages for the cells v2 commands <http://docs.openstack.org/developer/nova/man/nova-manage.html#nova-cells-v2>`_
+* :doc:`nova-manage man page </cli/nova-manage>`
 
 FAQs
 ====

doc/source/conf.py

@@ -123,7 +123,7 @@ _man_pages = [
 ]
 
 man_pages = [
-    ('man/%s' % name, name, description, [u'OpenStack'], 1)
+    ('cli/%s' % name, name, description, [u'OpenStack'], 1)
     for name, description in _man_pages]
 
 # -- Options for HTML output --------------------------------------------------

doc/source/index.rst

@@ -215,7 +215,7 @@ Man Pages
 .. toctree::
    :maxdepth: 1
 
-   man/index
+   cli/index
 
 Module Reference
 ----------------

doc/source/placement.rst

@@ -142,11 +142,11 @@ Upgrade Notes
 
 The follow sub-sections provide notes on upgrading to a given target release.
 
-.. note:: As a reminder, the `nova-status upgrade check`_ tool can be used to
+.. note::
-  help determine the status of your deployment and how ready it is to perform
-  an upgrade.
 
-.. _nova-status upgrade check: http://docs.openstack.org/developer/nova/man/nova-status.html
+   As a reminder, the :doc:`nova-status upgrade check </cli/nova-status>` tool
+   can be used to help determine the status of your deployment and how ready it
+   is to perform an upgrade.
 
 Ocata (15.0.0)
 ~~~~~~~~~~~~~~