Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Update block rules on nodes"
  - Update block rules on nodes

    Only one scenario job can be excuted in the same POD. The rules should
    be configured in job teamplate instead of parent job.

    Change-Id: I9f672345985dbfdfe54b9ccd017a3a575a2ab412
    Signed-off-by: Julien <zhang.jun3g@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 7862b47..cb26482 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 7862b47133a7ec4f85cb8b3a1b8ea7452fe41bc1
+Subproject commit cb26482db39a19cbbe6f0bd9e0fa241b2ab05078