Termination support

Changes:
- Adds a procedure to fill the pipeline in different use cases;
- Adds a new utility function to fill the MPLS flow tables;

Change-Id: I1f4fa377681fc2a4b4aa106746de6bd8e1717860
diff --git a/ofdpa/flows.py b/ofdpa/flows.py
index fa4decd..dd04fa9 100755
--- a/ofdpa/flows.py
+++ b/ofdpa/flows.py
@@ -1924,3 +1924,6 @@
             delete_all_flows( self.controller )
             delete_groups( self.controller, groups )
             delete_all_groups( self.controller )
+
+
+