Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "add python verify job for doctor"
  - add python verify job for doctor

    Change-Id: I5432c5c87f0eed279cba0b80947761a81a72cd61
    Signed-off-by: dongwenjuan <dong.wenjuan@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index c5643ad..e5b452d 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit c5643adaaf9f4dd67b4adc617e00b25f8464d26a
+Subproject commit e5b452dfa55f8fb7a6bcc6895ae4c671b1c871cb