Bump up ONOS to yang tools version 2.0

Change-Id: Ib22b256a15096c29eee83938866d06d283c37c4c
diff --git a/drivers/huawei/driver/pom.xml b/drivers/huawei/driver/pom.xml
index 373c23d..fc26a56 100644
--- a/drivers/huawei/driver/pom.xml
+++ b/drivers/huawei/driver/pom.xml
@@ -31,7 +31,7 @@
 
     <description>Huawei driver implementation</description>
     <properties>
-        <yang-tool-version>1.12.0-b7</yang-tool-version>
+        <yang-tool-version>2.0</yang-tool-version>
     </properties>
     <dependencies>
         <dependency>
diff --git a/drivers/huawei/yangmodel/pom.xml b/drivers/huawei/yangmodel/pom.xml
index ca28572..e1ad445 100644
--- a/drivers/huawei/yangmodel/pom.xml
+++ b/drivers/huawei/yangmodel/pom.xml
@@ -22,7 +22,7 @@
         <dependency>
             <groupId>org.onosproject</groupId>
             <artifactId>onos-yang-model</artifactId>
-            <version>1.12.0-b7</version>
+            <version>2.0</version>
         </dependency>
     </dependencies>
 
@@ -43,7 +43,7 @@
             <plugin>
                 <groupId>org.onosproject</groupId>
                 <artifactId>onos-yang-compiler-maven-plugin</artifactId>
-                <version>1.12.0-b7</version>
+                <version>2.0</version>
                 <executions>
                     <execution>
                         <goals>