Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Create Stable Branch Jobs for storperf"
  - Create Stable Branch Jobs for storperf

    Change-Id: Icb9fbd8bc648458c44ff60990c02a4afb837e383
    Signed-off-by: jenkins-ci <jenkins-opnfv-ci@opnfv.org>
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 4cda72c..d679b92 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 4cda72c097f7cc44bdefe32d58ca6bf22aa27802
+Subproject commit d679b9255574c6c007663e2c185d2fb322cc0951