Adding learning-switch application to apps pom.xml

Change-Id: Ie4fc2e92ce84680ba8a5bcc93bde17568829e172
diff --git a/apps/pom.xml b/apps/pom.xml
index c189a1a..375f7cd 100644
--- a/apps/pom.xml
+++ b/apps/pom.xml
@@ -77,6 +77,7 @@
         <module>bmv2-demo</module>
         <module>yms</module>
         <module>rabbitmq</module>
+        <module>learning-switch</module>
     </modules>