Provides our own INeutronNetworkCRUD implementation.

Implements our own INeutronNetworkCRUD implementation and moved the
ZooKeeper bridge creation logic into it.
Merge branch 'dev/tomohiko/odp-37-crud/20140108' of github.com:midokura/odp-controller into dev/tomohiko/odp-37-crud/20140108

Conflicts:
	opendaylight/networkconfiguration/neutron/midonet/src/main/java/org/opendaylight/controller/networkconfig/neutron/midonet/Activator.java
	opendaylight/networkconfiguration/neutron/midonet/src/main/java/org/opendaylight/controller/networkconfig/neutron/midonet/MidoNetNetworkAware.java