The l3 agent stop function should NOT stop dnsmasq
The l3 agent stop function should NOT stop dnsmasq

The dnsmasq instances are managed by the quantum-dhcp-agent so
killing then make no sense and creates races in stop when both
services are running on the same node.

openstack/openstack-resource-agents,madkiss/openstack-resource-agents,aspiers/openstack-resource-agents