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/cli/nova-dhcpbridge.rst

@@ -0,0 +1,49 @@
+===============
+nova-dhcpbridge
+===============
+
+--------------------------------------------------
+Handles Lease Database updates from DHCP servers
+--------------------------------------------------
+
+:Author: openstack@lists.openstack.org
+:Date:   2012-09-27
+:Copyright: OpenStack Foundation
+:Version: 2012.1
+:Manual section: 1
+:Manual group: cloud computing
+
+SYNOPSIS
+========
+
+  nova-dhcpbridge [options]
+
+DESCRIPTION
+===========
+
+Handles lease database updates from DHCP servers. Used whenever nova is
+managing DHCP (vlan and flatDHCP). nova-dhcpbridge should not be run as a daemon.
+
+OPTIONS
+=======
+
+ **General options**
+
+FILES
+========
+
+* /etc/nova/nova.conf
+* /etc/nova/api-paste.ini
+* /etc/nova/policy.json
+* /etc/nova/rootwrap.conf
+* /etc/nova/rootwrap.d/
+
+SEE ALSO
+========
+
+* `OpenStack Nova <https://docs.openstack.org/developer/nova>`__
+
+BUGS
+====
+
+* Nova bugs are managed at Launchpad `Bugs : Nova <https://bugs.launchpad.net/nova>`__