Fixing a race condition which prevented barrier-replies from being recognized.
Uncommenting MPLS actions in driver, and creating new action of BoS, even though we do not push actions in flow-mods.

Change-Id: I333023b4ef88c9328d6c63c7f988b5e2225a19f3
diff --git a/src/main/java/net/onrc/onos/core/matchaction/action/SetMplsBosAction.java b/src/main/java/net/onrc/onos/core/matchaction/action/SetMplsBosAction.java
new file mode 100644
index 0000000..610fc2d
--- /dev/null
+++ b/src/main/java/net/onrc/onos/core/matchaction/action/SetMplsBosAction.java
@@ -0,0 +1,13 @@
+package net.onrc.onos.core.matchaction.action;
+
+public class SetMplsBosAction implements Action {
+    private final boolean mplsBos;
+
+    public SetMplsBosAction(boolean setBos) {
+        mplsBos = setBos;
+    }
+
+    public boolean isSet() {
+        return mplsBos;
+    }
+}