[gnome-continuous] manifest: use 3.18-y kernel, now required by systemd

[Vadim Rutkovsky <vrutkovsky src gnome org>]

commit cb9f725e20f092c2ae3d2da956e2855e5a78053c
Author: Vadim Rutkovsky <vrutkovs redhat com>
Date:   Mon Feb 9 11:34:58 2015 +0100

    manifest: use 3.18-y kernel, now required by systemd

 manifest.json |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/manifest.json b/manifest.json
index 444df08..0dd3e5b 100644
--- a/manifest.json
+++ b/manifest.json
@@ -57,7 +57,7 @@
                  "child-components": [
                      {"src": "kernel:stable/linux-stable",
                       "name": "linux",
-                      "branch": "linux-3.14.y"}
+                      "branch": "linux-3.18.y"}
                  ]},
 
                {"src": "gnome:gtk-doc-stub",