Move agent cleanup scripts to cmd module

Ensure naming consistency across the various entry points.

This patch better separates active elements of Neutron agents from
operator's utilities.

Along with [1,2,3], this is done to better delineate what the agent
module inner boundaries are about. More to follow to finish off the
cleanup.

[1] https://review.openstack.org/#/c/146024/
[2] https://review.openstack.org/#/c/145979/
[3] https://review.openstack.org/#/c/146239/

Change-Id: I1d2d2938aa7fa1c60e0f0dc70997778a1930efef

neutron/tests/unit/test_netns_cleanup.py

@@ -16,7 +16,7 @@
 import mock
 
 from neutron.agent.linux import interface
-from neutron.agent import netns_cleanup_util as util
+from neutron.cmd import netns_cleanup as util
 from neutron.tests import base
 
 

neutron/tests/unit/test_ovs_cleanup.py

@@ -19,7 +19,7 @@ import mock
 
 from neutron.agent.linux import ip_lib
 from neutron.agent.linux import ovs_lib
-from neutron.agent import ovs_cleanup_util as util
+from neutron.cmd import ovs_cleanup as util
 from neutron.openstack.common import uuidutils
 from neutron.tests import base
 
@@ -47,7 +47,7 @@ class TestOVSCleanup(base.BaseTestCase):
         conf.external_network_bridge = 'br-ex'
         with contextlib.nested(
             mock.patch('neutron.common.config.setup_logging'),
-            mock.patch('neutron.agent.ovs_cleanup_util.setup_conf',
+            mock.patch('neutron.cmd.ovs_cleanup.setup_conf',
                        return_value=conf),
             mock.patch('neutron.agent.linux.ovs_lib.get_bridges',
                        return_value=bridges),

setup.cfg

@@ -108,12 +108,12 @@ console_scripts =
     neutron-metadata-agent = neutron.agent.metadata_agent:main
     neutron-mlnx-agent = neutron.plugins.mlnx.agent.eswitch_neutron_agent:main
     neutron-nec-agent = neutron.plugins.nec.agent.nec_neutron_agent:main
-    neutron-netns-cleanup = neutron.agent.netns_cleanup_util:main
+    neutron-netns-cleanup = neutron.cmd.netns_cleanup:main
     neutron-ns-metadata-proxy = neutron.agent.metadata.namespace_proxy:main
     neutron-nsx-manage = neutron.plugins.vmware.shell:main
     neutron-nvsd-agent = neutron.plugins.oneconvergence.agent.nvsd_neutron_agent:main
     neutron-openvswitch-agent = neutron.plugins.openvswitch.agent.ovs_neutron_agent:main
-    neutron-ovs-cleanup = neutron.agent.ovs_cleanup_util:main
+    neutron-ovs-cleanup = neutron.cmd.ovs_cleanup:main
     neutron-restproxy-agent = neutron.plugins.bigswitch.agent.restproxy_agent:main
     neutron-server = neutron.server:main
     neutron-rootwrap = oslo.rootwrap.cmd:main