Comment 50 for bug 1436414

https://bugs.launchpad.net/mos/+bug/1499729 prevents to check this issue on 7.0 using those steps:
root@node-6:~# ip netns | grep -c qdhcp
3
 * Create 2k namespaces:
   for i in {1000..2999}; do ip netns add "qdhcp-6a6302b1-37a7-4142-a11d-5be2778f$i" ; done
 * Run q-agent-cleanup:
   neutron-netns-cleanup --config-file=/etc/neutron/neutron.conf --config-file=/etc/neutron/dhcp_agent.ini