[WIP] Upgrade ONOS to karaf version 4.2.1

Change-Id: I7cd40c995bdf1c80f94b1895fb3344e32404c7fa
diff --git a/incubator/net/src/main/java/org/onosproject/incubator/net/config/impl/ExtraNetworkConfigs.java b/incubator/net/src/main/java/org/onosproject/incubator/net/config/impl/ExtraNetworkConfigs.java
index 7a8eacf..5886078 100644
--- a/incubator/net/src/main/java/org/onosproject/incubator/net/config/impl/ExtraNetworkConfigs.java
+++ b/incubator/net/src/main/java/org/onosproject/incubator/net/config/impl/ExtraNetworkConfigs.java
@@ -16,11 +16,11 @@
 package org.onosproject.incubator.net.config.impl;
 
 import com.google.common.collect.ImmutableSet;
-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.config.ConfigFactory;
 import org.onosproject.net.config.NetworkConfigRegistry;
 import org.slf4j.Logger;
@@ -38,7 +38,7 @@
 
     private final Set<ConfigFactory> factories = ImmutableSet.of();
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected NetworkConfigRegistry registry;
 
     @Activate