Update git submodules

* Update docs/submodules/releng from branch 'master'
  - bugfix: wrong usage of '!include-raw'

    JIRA: DOCTOR-126

    Change-Id: Iabcd8a8ad14079e2ba7e72e39e009a0ee833cb3c
    Signed-off-by: dongwenjuan <dong.wenjuan@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index af9396b..ef4f36a 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit af9396beb5d068cd3b2a1a74c97287b8f0760644
+Subproject commit ef4f36aa1c2ff0819d73cde44f84b99a42e15c7e