Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Disable OpenBaton JOID Fraser Job"
  - Disable OpenBaton JOID Fraser Job

    The orchestra project pulled out of the Fraser release but had been part
    of Euphrates. As these triggers were copied from the Euphrates jobs,
    removal of openbaton was missed.

    Change-Id: I9483d107fb75eda02701ca9bdd5d44aa87c068bf
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index a805854..6437f37 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit a80585499b83500d152a3be1c6cd0e7fe87d1484
+Subproject commit 6437f370e393f47f384519208f70c75477ac3b0f