[WIP] Upgrade ONOS to karaf version 4.2.1

Change-Id: I7cd40c995bdf1c80f94b1895fb3344e32404c7fa
diff --git a/drivers/microsemi/ea1000/src/test/java/org/onosproject/yang/MockYangRuntimeManager.java b/drivers/microsemi/ea1000/src/test/java/org/onosproject/yang/MockYangRuntimeManager.java
index 5cfa3ef..2ed8af3 100644
--- a/drivers/microsemi/ea1000/src/test/java/org/onosproject/yang/MockYangRuntimeManager.java
+++ b/drivers/microsemi/ea1000/src/test/java/org/onosproject/yang/MockYangRuntimeManager.java
@@ -15,10 +15,10 @@
  */
 package org.onosproject.yang;
 
-import org.apache.felix.scr.annotations.Activate;
-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.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.onosproject.core.CoreService;
 import org.onosproject.drivers.netconf.MockCoreService;
 import org.onosproject.yang.model.ModelConverter;
@@ -62,7 +62,7 @@
         private static final String APP_ID = "org.onosproject.yang";
         private final Logger log = LoggerFactory.getLogger(getClass());
 
-        @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+        @Reference(cardinality = ReferenceCardinality.MANDATORY)
         protected CoreService coreService;
 
         private DefaultYangModelRegistry modelRegistry;