- Fix spelling of hearbeat_check_interval and hearbeat_fail_interval config parameters
  to heartbeat_check_interval and heartbeat_fail_interval
- Bump version to 3.1.5

Change-Id: Ic5056997af031d08c1fb1ceda3fcc108f8f01707
diff --git a/VERSION b/VERSION
index 0aec50e..3ad0595 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.1.4
+3.1.5