Bumping ONOS to point to ONOS YANG Tools 2.2.0-b2

Change-Id: I5b13811572a68dd0e61b3085b0be425a14d830d6
diff --git a/lib/pom.xml b/lib/pom.xml
index 37423c0..dc7dc8a 100644
--- a/lib/pom.xml
+++ b/lib/pom.xml
@@ -40,7 +40,7 @@
         <netty4.version>4.1.8.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>2.2.0-b1</onos-yang-tools.version>
+        <onos-yang-tools.version>2.2.0-b2</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>