Neutron YANG model revision: Fix compilation issues

Neutron YANG model revision: Fix compilation issues

1. This patch implements the necessary changes required
   in the routermanager branch for the updated neutron yang
   model and removes the dependency on neutron.spi
2. We now use non lithium openflowplugin dependencies
   (without "-li" version)
3. It also includes the following cherry-pics:

neutron: unbreak of neutron northbound yang model revise

This patch provides the corresponding change needed to fix
compilation issues after the Yang model revise
Neutron changes:
https://git.opendaylight.org/gerrit/#/q/project:neutron+branch:master+topic:yang-model-revise

Conflicts:
	netvirt/renderers/neutron/src/test/java/org/opendaylight/netvirt/netvirt/renderers/neutron/NeutronPortDataProcessorTest.java
	openstack/net-virt/src/main/java/org/opendaylight/netvirt/openstack/netvirt/translator/crud/impl/NeutronSecurityGroupInterface.java
	utils/neutron-utils/src/main/java/org/opendaylight/netvirt/utils/neutron/utils/NeutronUtils.java
	vpnservice/dhcpservice/dhcpservice-impl/src/main/java/org/opendaylight/netvirt/dhcpservice/DhcpExternalTunnelManager.java
	vpnservice/dhcpservice/dhcpservice-impl/src/main/java/org/opendaylight/netvirt/dhcpservice/DhcpInterfaceEventListener.java
	vpnservice/dhcpservice/dhcpservice-impl/src/main/java/org/opendaylight/netvirt/dhcpservice/DhcpNeutronPortListener.java
	vpnservice/dhcpservice/dhcpservice-impl/src/main/java/org/opendaylight/netvirt/dhcpservice/DhcpPktHandler.java
	vpnservice/dhcpservice/dhcpservice-impl/src/main/java/org/opendaylight/netvirt/dhcpservice/DhcpServiceUtils.java
	vpnservice/features/pom.xml
	vpnservice/features/src/main/features/features.xml
	vpnservice/neutronvpn/neutronvpn-impl/src/main/java/org/opendaylight/netvirt/neutronvpn/NeutronNetworkChangeListener.java
	vpnservice/neutronvpn/neutronvpn-impl/src/main/java/org/opendaylight/netvirt/neutronvpn/NeutronPortChangeListener.java
	vpnservice/neutronvpn/neutronvpn-impl/src/main/java/org/opendaylight/netvirt/neutronvpn/NeutronRouterChangeListener.java
	vpnservice/neutronvpn/neutronvpn-impl/src/main/java/org/opendaylight/netvirt/neutronvpn/NeutronSubnetChangeListener.java
	vpnservice/neutronvpn/neutronvpn-impl/src/main/java/org/opendaylight/netvirt/neutronvpn/NeutronvpnManager.java
	vpnservice/neutronvpn/neutronvpn-impl/src/main/java/org/opendaylight/netvirt/neutronvpn/NeutronvpnProvider.java
	vpnservice/neutronvpn/neutronvpn-impl/src/main/java/org/opendaylight/netvirt/neutronvpn/NeutronvpnUtils.java
	vpnservice/neutronvpn/neutronvpn-impl/src/test/java/org/opendaylight/netvirt/neutronvpn/NeutronPortChangeListenerTest.java

Change-Id: I15850089233d72038a70e1edcb4db1e69445fe57
Signed-off-by: Ritu Sood <ritu.sood@intel.com>
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
(cherry picked from commit 974c63817c6999aa29de9756d677f9356cbfc363)

translator: remove dependency of neutron.spi

netvirt still had a dependency on netutron.spi. which seems accidentally
remained when netvirt migrated from I*Aware AD-SAL to MD-SAL.
This patch removes its dependency and finish its migration with the only
dependency is neutron yang model.
In order to avoid circular dependency, NeutronModelsDataStoreHelper was
moved from neutron.util to net-virt.

Conflicts:
	features/pom.xml
	features/src/main/features/features.xml
	netvirt/it/src/test/java/org/opendaylight/netvirt/netvirt/it/NetvirtIT.java
	openstack/net-virt-it/src/test/java/org/opendaylight/netvirt/openstack/netvirt/it/NetvirtIT.java
	openstack/net-virt/src/main/java/org/opendaylight/netvirt/openstack/netvirt/ConfigActivator.java
	utils/it-utils/pom.xml
	utils/netvirt-it-utils/src/main/java/org/opendaylight/netvirt/utils/netvirt/it/utils/NeutronNetItUtil.java
	utils/neutron-utils/src/main/java/org/opendaylight/netvirt/utils/neutron/utils/NeutronUtils.java

Change-Id: I09628c39a2df85bc18d930639965d5a466134658
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
(cherry picked from commit 073819fa1c920e2e759737de60175a08c7faa3aa)

Change-Id: Ia189e0c0e9c934815ef019840fa948a7f971c3b6
Signed-off-by: Sridhar Gaddam <sgaddam@redhat.com>