[WIP] Upgrade ONOS to karaf version 4.2.1

Change-Id: I7cd40c995bdf1c80f94b1895fb3344e32404c7fa
diff --git a/core/common/src/main/java/org/onosproject/common/net/AbstractDeviceProvider.java b/core/common/src/main/java/org/onosproject/common/net/AbstractDeviceProvider.java
index 9a70369..7912102 100644
--- a/core/common/src/main/java/org/onosproject/common/net/AbstractDeviceProvider.java
+++ b/core/common/src/main/java/org/onosproject/common/net/AbstractDeviceProvider.java
@@ -16,11 +16,11 @@
 
 package org.onosproject.common.net;
 
-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.onosproject.net.DeviceId;
 import org.onosproject.net.device.DeviceDescription;
 import org.onosproject.net.device.DeviceDescriptionDiscovery;
@@ -52,10 +52,10 @@
 
     protected final Logger log = LoggerFactory.getLogger(getClass());
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected DeviceProviderRegistry providerRegistry;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected DriverService driverService;
 
     protected DeviceProviderService providerService;