Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Add sfc project"
  - Add sfc project

    Change-Id: I94e981782dec65df6352d78ea79f4e389b9a2ea3
    Signed-off-by: Manuel Buil <mbuil@suse.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 523559b..e76ea55 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 523559bbda53d611698400ec01d7f58db7a16491
+Subproject commit e76ea5583f77cc7d1e664294c13db0868e2f0471