[gnome-ostree] manifest: Update to latest libnl3 stable

[Colin Walters <walters src gnome org>]

commit c5b7714bb00e4c7b115089c433a459d91adb77d5
Author: Colin Walters <walters verbum org>
Date:   Wed Apr 10 14:39:27 2013 -0400

    manifest: Update to latest libnl3 stable
    
    This appears to fix a bug with NM compilation.

 manifest.json |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/manifest.json b/manifest.json
index 75dab60..e45930b 100644
--- a/manifest.json
+++ b/manifest.json
@@ -372,7 +372,7 @@
                                 "--disable-gtk-doc"]},
 
                {"src": "git:git://git.infradead.org/users/tgr/libnl.git",
-                "tag": "f8b4f9271b86c7294c7f87270e74b8c690798dd9",
+                "tag": "libnl3_2_21",
                 "name": "libnl3"},
 
                {"src": "cgwalters:nss-tarballs-as-git",