Bump up ONOS to yang tools version 2.0

Change-Id: Ib22b256a15096c29eee83938866d06d283c37c4c
diff --git a/apps/config/pom.xml b/apps/config/pom.xml
index b5eb7a6..9f68e3f 100755
--- a/apps/config/pom.xml
+++ b/apps/config/pom.xml
@@ -37,7 +37,7 @@
         <dependency>
             <groupId>org.onosproject</groupId>
             <artifactId>onos-yang-model</artifactId>
-            <version>1.12.0-b8</version>
+            <version>2.0</version>
         </dependency>
         <dependency>
             <groupId>org.onosproject</groupId>
diff --git a/apps/netconf/client/src/main/java/org/onosproject/netconf/client/impl/NetconfTranslatorImpl.java b/apps/netconf/client/src/main/java/org/onosproject/netconf/client/impl/NetconfTranslatorImpl.java
index 87ff7b9..b8ecbf2 100644
--- a/apps/netconf/client/src/main/java/org/onosproject/netconf/client/impl/NetconfTranslatorImpl.java
+++ b/apps/netconf/client/src/main/java/org/onosproject/netconf/client/impl/NetconfTranslatorImpl.java
@@ -52,7 +52,7 @@
 import org.onosproject.yang.runtime.DefaultYangSerializerContext;
 import org.onosproject.yang.runtime.YangRuntimeService;
 import org.onosproject.yang.runtime.YangSerializerContext;
-import org.onosproject.yang.runtime.helperutils.SerializerHelper;
+import org.onosproject.yang.runtime.SerializerHelper;
 import org.osgi.service.component.ComponentContext;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -71,7 +71,7 @@
 import static com.google.common.base.Preconditions.checkNotNull;
 import static org.onosproject.netconf.TargetConfig.RUNNING;
 import static org.onosproject.yang.model.DataNode.Type.SINGLE_INSTANCE_LEAF_VALUE_NODE;
-import static org.onosproject.yang.runtime.helperutils.SerializerHelper.addDataNode;
+import static org.onosproject.yang.runtime.SerializerHelper.addDataNode;
 
 /*FIXME these imports are not visible using OSGI*/
 
diff --git a/apps/restconf/restconfmgr/pom.xml b/apps/restconf/restconfmgr/pom.xml
index 68f4efe..4f014de 100644
--- a/apps/restconf/restconfmgr/pom.xml
+++ b/apps/restconf/restconfmgr/pom.xml
@@ -32,7 +32,7 @@
         <dependency>
             <groupId>org.onosproject</groupId>
             <artifactId>onos-yang-model</artifactId>
-            <version>1.12.0-b8</version>
+            <version>2.0</version>
         </dependency>
         <dependency>
             <groupId>org.onosproject</groupId>
diff --git a/apps/restconf/utils/pom.xml b/apps/restconf/utils/pom.xml
index f5ba9e1..5ec1e13 100644
--- a/apps/restconf/utils/pom.xml
+++ b/apps/restconf/utils/pom.xml
@@ -32,7 +32,7 @@
         <dependency>
             <groupId>org.onosproject</groupId>
             <artifactId>onos-yang-runtime</artifactId>
-            <version>1.12.0-b8</version>
+            <version>2.0</version>
         </dependency>
         <dependency>
             <groupId>org.onosproject</groupId>