Update version for 2.5.1.1 release

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com
diff --git a/VERSION b/VERSION
index 73462a5..3a6d214 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.5.1
+2.5.1.1