Update version for 1.5.0-rc2 release

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/VERSION b/VERSION
index 8d9b8b2..0101924 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.4.91
+1.4.92