Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "prepare installer info for doctor test"
  - prepare installer info for doctor test

    Change-Id: I6344a31b28d3e5c9a998693fd64ec255410c62b6
    Signed-off-by: dongwenjuan <dong.wenjuan@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 09cfb60..f1798a4 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 09cfb60453d9cfa317c5e5d317c48823d23c6258
+Subproject commit f1798a4fa7145e37184bad8d282b49a922df21b4