[WIP] Upgrade ONOS to karaf version 4.2.1

Change-Id: I7cd40c995bdf1c80f94b1895fb3344e32404c7fa
diff --git a/core/store/dist/src/main/java/org/onosproject/store/config/impl/DistributedNetworkConfigStore.java b/core/store/dist/src/main/java/org/onosproject/store/config/impl/DistributedNetworkConfigStore.java
index 7c2081e..bac245e 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/config/impl/DistributedNetworkConfigStore.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/config/impl/DistributedNetworkConfigStore.java
@@ -29,12 +29,6 @@
 import com.fasterxml.jackson.databind.node.TextNode;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Maps;
-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.onlab.util.KryoNamespace;
 import org.onosproject.net.config.Config;
 import org.onosproject.net.config.ConfigApplyDelegate;
@@ -51,6 +45,11 @@
 import org.onosproject.store.service.Serializer;
 import org.onosproject.store.service.StorageService;
 import org.onosproject.store.service.Versioned;
+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 org.slf4j.LoggerFactory;
 
@@ -69,8 +68,7 @@
 /**
  * Implementation of a distributed network configuration store.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = NetworkConfigStore.class)
 public class DistributedNetworkConfigStore
         extends AbstractStore<NetworkConfigEvent, NetworkConfigStoreDelegate>
         implements NetworkConfigStore {
@@ -84,7 +82,7 @@
     private static final String INVALID_JSON_OBJECT =
             "JSON node is not an object for object type config";
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected StorageService storageService;
 
     private ConsistentMap<ConfigKey, JsonNode> configs;