Update git submodules

* Update docs/submodules/doctor from branch 'stable/euphrates'
  - fix to get logfile

    Change-Id: I44cc6c5108eb48191ca36cbcb44f787ea542f3ce
    Signed-off-by: dongwenjuan <dong.wenjuan@zte.com.cn>
    (cherry picked from commit b3dcaa337fa91b3123fa08e8b8dd2e81184a91dd)

diff --git a/docs/submodules/doctor b/docs/submodules/doctor
index 5733b9c..2c9569e 160000 (submodule)
--- a/docs/submodules/doctor
+++ b/docs/submodules/doctor
@@ -1 +1 @@
-Subproject commit 5733b9ce1dcfb40e0ef6a956c0e6c092829fc6d6
+Subproject commit 2c9569e66c4f0e333d603f93b280768bea4f2d07