Update git submodules

* Update docs/submodules/releng from branch 'master'
  - [barometer] Remove stable/fraser jobs

    Change-Id: I0f5f8225c38f535241ecd78aa93aee28782cbc4f
    Signed-off-by: Emma Foley <emma.l.foley@intel.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 9b7568c..46a2114 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 9b7568cbcd5a1decc0f3d64e3bdc6b6347bb5c3d
+Subproject commit 46a21147fd121ab4d334cc46f74317a3275d2037