Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "[daisy] Support doctor in daisy master branch"
  - [daisy] Support doctor in daisy master branch

    Change-Id: Ia7c76da78242f2a3906431e0d301f20aeeb460b3
    Signed-off-by: Alex Yang <yangyang1@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index f175118..7adc859 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit f1751183fe77d358008ecb0f986fefd9f545b4ad
+Subproject commit 7adc859a96ecbfce421bd4367e98e00f33069d04