Adding a new top-level landing spot for SB protocol libraries & controllers.

Change-Id: I38311a7298c812b739cfc734a81ba0bb44ba38b6
diff --git a/pom.xml b/pom.xml
index 937794c..b650b2b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -45,6 +45,7 @@
         <module>web</module>
         <module>cli</module>
 
+        <module>protocols</module>
         <module>openflow</module>
         <module>ovsdb</module>
         <module>netconf</module>