[WIP] Upgrade ONOS to karaf version 4.2.1

Change-Id: I7cd40c995bdf1c80f94b1895fb3344e32404c7fa
diff --git a/core/common/src/test/java/org/onosproject/store/trivial/SimpleGroupStore.java b/core/common/src/test/java/org/onosproject/store/trivial/SimpleGroupStore.java
index d2e0834..0564fae 100644
--- a/core/common/src/test/java/org/onosproject/store/trivial/SimpleGroupStore.java
+++ b/core/common/src/test/java/org/onosproject/store/trivial/SimpleGroupStore.java
@@ -15,24 +15,8 @@
  */
 package org.onosproject.store.trivial;
 
-import static org.slf4j.LoggerFactory.getLogger;
-
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map;
-import java.util.Optional;
-import java.util.Set;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.ConcurrentMap;
-import java.util.concurrent.atomic.AtomicInteger;
-
-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.Service;
+import com.google.common.collect.FluentIterable;
+import com.google.common.collect.Sets;
 import org.onosproject.core.GroupId;
 import org.onosproject.net.DeviceId;
 import org.onosproject.net.group.DefaultGroup;
@@ -51,16 +35,29 @@
 import org.onosproject.net.group.StoredGroupBucketEntry;
 import org.onosproject.net.group.StoredGroupEntry;
 import org.onosproject.store.AbstractStore;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
 import org.slf4j.Logger;
 
-import com.google.common.collect.FluentIterable;
-import com.google.common.collect.Sets;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import static org.slf4j.LoggerFactory.getLogger;
 
 /**
  * Manages inventory of group entries using trivial in-memory implementation.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = GroupStore.class)
 public class SimpleGroupStore
         extends AbstractStore<GroupEvent, GroupStoreDelegate>
         implements GroupStore {