[WIP] Upgrade ONOS to karaf version 4.2.1

Change-Id: I7cd40c995bdf1c80f94b1895fb3344e32404c7fa
diff --git a/apps/yms/app/src/main/java/org/onosproject/yms/app/ymsm/YmsManager.java b/apps/yms/app/src/main/java/org/onosproject/yms/app/ymsm/YmsManager.java
index 1af2302..b3e37c1 100644
--- a/apps/yms/app/src/main/java/org/onosproject/yms/app/ymsm/YmsManager.java
+++ b/apps/yms/app/src/main/java/org/onosproject/yms/app/ymsm/YmsManager.java
@@ -16,12 +16,6 @@
 
 package org.onosproject.yms.app.ymsm;
 
-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.onosproject.core.ApplicationId;
 import org.onosproject.core.CoreService;
 import org.onosproject.core.IdGenerator;
@@ -47,6 +41,11 @@
 import org.onosproject.yms.ynh.YangNotificationService;
 import org.onosproject.yms.ysr.YangModuleIdentifier;
 import org.onosproject.yms.ysr.YangModuleLibrary;
+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;
 
@@ -61,8 +60,7 @@
 /**
  * Represents implementation of YANG management system manager.
  */
-@Service
-@Component(immediate = true)
+@Component(immediate = true, service = YmsService.class)
 public class YmsManager
         implements YmsService {
 
@@ -79,7 +77,7 @@
     private YangNotificationExtendedService ynhExtendedService;
     private YangModuleLibrary library;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected CoreService coreService;
 
     @Activate
diff --git a/apps/yms/app/src/main/java/org/onosproject/yms/app/ypm/YpmManager.java b/apps/yms/app/src/main/java/org/onosproject/yms/app/ypm/YpmManager.java
index 954511a..8e6238f 100644
--- a/apps/yms/app/src/main/java/org/onosproject/yms/app/ypm/YpmManager.java
+++ b/apps/yms/app/src/main/java/org/onosproject/yms/app/ypm/YpmManager.java
@@ -16,22 +16,20 @@
 
 package org.onosproject.yms.app.ypm;
 
-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 org.onosproject.yms.ydt.YdtContext;
+import org.onosproject.yms.ypm.DefaultYpmNode;
 import org.onosproject.yms.ypm.YpmContext;
 import org.onosproject.yms.ypm.YpmService;
-import org.onosproject.yms.ypm.DefaultYpmNode;
+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 org.slf4j.LoggerFactory;
 
 /**
  * Represents implementation of YANG protocol metadata manager.
  */
-@Service
-@Component(immediate = true)
+@Component(immediate = true, service = YpmService.class)
 public class YpmManager implements YpmService {
 
     private final Logger log = LoggerFactory.getLogger(getClass());