This commit consists of:
1) Update the voltha.proto to remove duplicates between the voltha message and
the CoreInstance.   Since all data will be stored into the clustered KV store
then it makes sense to use a clustered proto message instead of core specific.
Each core will hold a subset of the data, only those it is actively or passively
managing.
2) Add a Makefile into the adapters directory to clearly separate the build of
adapters to the core build.   This is work in progress.
3) Add an initial readme.md into the adapters directory to show how to run ponsim
olt and onu adapters in containers
4) Minor cleanup, mostly around name consistency.

Change-Id: I55155c41b56e95877f8735b536873a87d6ca63b1
diff --git a/rw_core/core/logical_device_manager.go b/rw_core/core/logical_device_manager.go
index 61f96e8..aa22d57 100644
--- a/rw_core/core/logical_device_manager.go
+++ b/rw_core/core/logical_device_manager.go
@@ -34,18 +34,18 @@
 	deviceMgr                  *DeviceManager
 	adapterProxy               *AdapterProxy
 	kafkaProxy                 *kafka.KafkaMessagingProxy
-	localDataProxy             *model.Proxy
+	clusterDataProxy           *model.Proxy
 	exitChannel                chan int
 	lockLogicalDeviceAgentsMap sync.RWMutex
 }
 
-func NewLogicalDeviceManager(deviceMgr *DeviceManager, kafkaProxy *kafka.KafkaMessagingProxy, ldProxy *model.Proxy) *LogicalDeviceManager {
+func NewLogicalDeviceManager(deviceMgr *DeviceManager, kafkaProxy *kafka.KafkaMessagingProxy, cdProxy *model.Proxy) *LogicalDeviceManager {
 	var logicalDeviceMgr LogicalDeviceManager
 	logicalDeviceMgr.exitChannel = make(chan int, 1)
 	logicalDeviceMgr.logicalDeviceAgents = make(map[string]*LogicalDeviceAgent)
 	logicalDeviceMgr.deviceMgr = deviceMgr
 	logicalDeviceMgr.kafkaProxy = kafkaProxy
-	logicalDeviceMgr.localDataProxy = ldProxy
+	logicalDeviceMgr.clusterDataProxy = cdProxy
 	logicalDeviceMgr.lockLogicalDeviceAgentsMap = sync.RWMutex{}
 	return &logicalDeviceMgr
 }
@@ -80,7 +80,7 @@
 
 func (ldMgr *LogicalDeviceManager) getLogicalDevice(id string) (*voltha.LogicalDevice, error) {
 	log.Debugw("getlogicalDevice-start", log.Fields{"logicaldeviceid": id})
-	logicalDevice := ldMgr.localDataProxy.Get("/logical_devices/"+id, 1, false, "")
+	logicalDevice := ldMgr.clusterDataProxy.Get("/logical_devices/"+id, 1, false, "")
 	if logicalDevice != nil {
 		cloned := reflect.ValueOf(logicalDevice).Elem().Interface().(voltha.LogicalDevice)
 		return &cloned, nil
@@ -94,7 +94,7 @@
 	ldMgr.lockLogicalDeviceAgentsMap.Lock()
 	defer ldMgr.lockLogicalDeviceAgentsMap.Unlock()
 	for _, agent := range ldMgr.logicalDeviceAgents {
-		logicalDevice := ldMgr.localDataProxy.Get("/logical_devices/"+agent.logicalDeviceId, 1, false, "")
+		logicalDevice := ldMgr.clusterDataProxy.Get("/logical_devices/"+agent.logicalDeviceId, 1, false, "")
 		if logicalDevice != nil {
 			cloned := reflect.ValueOf(logicalDevice).Elem().Interface().(voltha.LogicalDevice)
 			result.Items = append(result.Items, &cloned)
@@ -118,7 +118,7 @@
 	id := strings.Replace(macAddress, ":", "", -1)
 	log.Debugw("setting-logical-device-id", log.Fields{"logicaldeviceId": id})
 
-	agent := NewLogicalDeviceAgent(id, device, ldMgr, ldMgr.deviceMgr, ldMgr.localDataProxy)
+	agent := NewLogicalDeviceAgent(id, device, ldMgr, ldMgr.deviceMgr, ldMgr.clusterDataProxy)
 	ldMgr.addLogicalDeviceAgentToMap(agent)
 	go agent.Start(ctx)