Use ONL 2.x and OFDPA 3.0 EA0 for fabric switches

Change-Id: Ic58d626687977250235ad92a37da2b0afa38b903
diff --git a/roles/fabric-switch/templates/purge b/roles/fabric-switch/templates/purge
index 296a8cf..720dcb4 100755
--- a/roles/fabric-switch/templates/purge
+++ b/roles/fabric-switch/templates/purge
@@ -1,3 +1,3 @@
 #!/bin/bash
 
-/usr/bin/ofdpa-i.12.1.1/examples/client_cfg_purge
+/usr/bin/client_cfg_purge