[WIP] Upgrade ONOS to karaf version 4.2.1

Change-Id: I7cd40c995bdf1c80f94b1895fb3344e32404c7fa
diff --git a/core/store/dist/src/main/java/org/onosproject/store/core/impl/DistributedApplicationIdStore.java b/core/store/dist/src/main/java/org/onosproject/store/core/impl/DistributedApplicationIdStore.java
index 9f6a2f6..4ec6a23 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/core/impl/DistributedApplicationIdStore.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/core/impl/DistributedApplicationIdStore.java
@@ -15,21 +15,10 @@
  */
 package org.onosproject.store.core.impl;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
-
-import java.util.Map;
-import java.util.Set;
-
-
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
-import org.apache.felix.scr.annotations.Service;
-import org.onosproject.core.ApplicationId;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Maps;
 import org.onosproject.app.ApplicationIdStore;
+import org.onosproject.core.ApplicationId;
 import org.onosproject.core.DefaultApplicationId;
 import org.onosproject.store.serializers.KryoNamespaces;
 import org.onosproject.store.service.AtomicCounter;
@@ -38,23 +27,28 @@
 import org.onosproject.store.service.MapEventListener;
 import org.onosproject.store.service.Serializer;
 import org.onosproject.store.service.StorageService;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.slf4j.Logger;
 
+import java.util.Map;
+import java.util.Set;
 
-import com.google.common.collect.ImmutableSet;
-import com.google.common.collect.Maps;
+import static org.slf4j.LoggerFactory.getLogger;
 
 /**
  * ApplicationIdStore implementation on top of {@code AtomicCounter}
  * and {@code ConsistentMap} primitives.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = ApplicationIdStore.class)
 public class DistributedApplicationIdStore implements ApplicationIdStore {
 
     private final Logger log = getLogger(getClass());
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected StorageService storageService;
 
     private AtomicCounter appIdCounter;