[WIP] Upgrade ONOS to karaf version 4.2.1

Change-Id: I7cd40c995bdf1c80f94b1895fb3344e32404c7fa
diff --git a/apps/restconf/restconfmgr/src/main/java/org/onosproject/restconf/restconfmanager/RestconfManager.java b/apps/restconf/restconfmgr/src/main/java/org/onosproject/restconf/restconfmanager/RestconfManager.java
index 8c8d58f..d37b466 100644
--- a/apps/restconf/restconfmgr/src/main/java/org/onosproject/restconf/restconfmanager/RestconfManager.java
+++ b/apps/restconf/restconfmgr/src/main/java/org/onosproject/restconf/restconfmanager/RestconfManager.java
@@ -18,12 +18,6 @@
 
 import com.fasterxml.jackson.databind.node.ObjectNode;
 import com.google.common.util.concurrent.ThreadFactoryBuilder;
-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.glassfish.jersey.server.ChunkedOutput;
 import org.onosproject.config.DynamicConfigService;
 import org.onosproject.config.FailedException;
@@ -45,6 +39,11 @@
 import org.onosproject.yang.model.RpcInput;
 import org.onosproject.yang.model.RpcOutput;
 import org.onosproject.yang.model.SchemaId;
+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;
 
@@ -79,8 +78,7 @@
  *    on the YANG data objects (i.e., resource id, yang data node).
  */
 
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = RestconfService.class)
 public class RestconfManager implements RestconfService {
 
     private static final String RESTCONF_ROOT = "/onos/restconf";
@@ -89,7 +87,7 @@
 
     private final Logger log = LoggerFactory.getLogger(getClass());
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected DynamicConfigService dynamicConfigService;
 
     private ExecutorService workerThreadPool;