Update version for v2.1.3 release

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
diff --git a/VERSION b/VERSION
index eca07e4..ac2cdeb 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.1.2
+2.1.3