Upgrade ONOS to yang tools version 2.5

Change-Id: I2a8f9ca6637185522023123f8e0b68cbe750d3fd
diff --git a/lib/pom.xml b/lib/pom.xml
index 78a5c5a..82ae93f 100644
--- a/lib/pom.xml
+++ b/lib/pom.xml
@@ -44,7 +44,7 @@
         <netty4.version>4.1.8.Final</netty4.version>
         <openflowj.version>3.2.1.onos</openflowj.version>
         <onos-maven-plugin.version>1.12</onos-maven-plugin.version>
-        <onos-yang-tools.version>2.4.7</onos-yang-tools.version>
+        <onos-yang-tools.version>2.5</onos-yang-tools.version>
         <osgi.version>5.0.0</osgi.version>
         <karaf.version>3.0.8</karaf.version>
         <jersey.version>2.26</jersey.version>