Moving LabelResourceManager to incubator

Breaking apart resource package into {device, link, label}
Refactored cluster serializers so they are visible

Change-Id: I71051bcd5e790ae6abeb154bf58286e584c32858
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceProviderRegistry.java b/incubator/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceProviderRegistry.java
new file mode 100644
index 0000000..4d50297
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/resource/label/LabelResourceProviderRegistry.java
@@ -0,0 +1,10 @@
+package org.onosproject.incubator.net.resource.label;
+
+import org.onosproject.net.provider.ProviderRegistry;
+/**
+ * Abstraction of an label resource provider registry.
+ */
+public interface LabelResourceProviderRegistry
+        extends ProviderRegistry<LabelResourceProvider, LabelResourceProviderService> {
+
+}