[WIP] Upgrade ONOS to karaf version 4.2.1

Change-Id: I7cd40c995bdf1c80f94b1895fb3344e32404c7fa
diff --git a/providers/xmpp/device/src/main/java/org/onosproject/provider/xmpp/device/impl/XmppDeviceProvider.java b/providers/xmpp/device/src/main/java/org/onosproject/provider/xmpp/device/impl/XmppDeviceProvider.java
index 069fc05..6d9967e 100644
--- a/providers/xmpp/device/src/main/java/org/onosproject/provider/xmpp/device/impl/XmppDeviceProvider.java
+++ b/providers/xmpp/device/src/main/java/org/onosproject/provider/xmpp/device/impl/XmppDeviceProvider.java
@@ -17,11 +17,11 @@
 package org.onosproject.provider.xmpp.device.impl;
 
 import com.google.common.base.Preconditions;
-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.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.onlab.packet.ChassisId;
 import org.onosproject.core.ApplicationId;
 import org.onosproject.core.CoreService;
@@ -68,16 +68,16 @@
     private static final String SERIAL_NUMBER = "unknown";
     private static final String IS_NULL_MSG = "XMPP device info is null";
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected DeviceProviderRegistry providerRegistry;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected DeviceService deviceService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected CoreService coreService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected XmppController controller;
 
     protected DeviceProviderService providerService;