Add rpcwatcher
Fix default for neutron.dhcp_agents_per_network

In the original PR, invalid configuration was specified for
neutron.dhcp_agents_per_network.
Merge pull request #152 from cbuben/fix-958

Fix default for neutron.dhcp_agents_per_network
Merge pull request #150 from git-harry/hfc

HFC update: Add rpcwatcher