Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Change the parameter of timeout to 150 minutes"
  - Change the parameter of timeout to 150 minutes

    Because we use the Openstack-Ansible to deploy the openstack,
    it will cost more time. 120 minute is too short for this.
    We change this to 150 minutes.

    Change-Id: I39beca2cbd191ac738185cca696555656174e84d
    Signed-off-by: wutianwei <wutianwei1@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index a49f77e..3726a8e 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit a49f77e37308ffc33d466240279000c607c9a94f
+Subproject commit 3726a8e5506b6a8567256df83393d308cca9c4f8