Update ONOS to use yang tools version 2.3.0-b3

Change-Id: I09f6ac082804a1e4b9f80732bbebb83596a1f4d7
diff --git a/lib/pom.xml b/lib/pom.xml
index cef4110..c6ca6a3 100644
--- a/lib/pom.xml
+++ b/lib/pom.xml
@@ -40,7 +40,7 @@
         <netty4.version>4.1.16.Final</netty4.version>
         <openflowj.version>3.2.0.onos</openflowj.version>
         <onos-maven-plugin.version>1.10</onos-maven-plugin.version>
-        <onos-yang-tools.version>2.3.0-b2</onos-yang-tools.version>
+        <onos-yang-tools.version>2.3.0-b3</onos-yang-tools.version>
         <osgi.version>5.0.0</osgi.version>
         <karaf.version>3.0.8</karaf.version>
         <jersey.version>2.25.1</jersey.version>