Update git submodules

* Update docs/submodules/doctor from branch 'master'
  - Merge "add python test indication"
  - add python test indication

    Change-Id: I2c56ce653e05727d13a26bf7bdd2595107a6ffba
    Signed-off-by: dongwenjuan <dong.wenjuan@zte.com.cn>

diff --git a/docs/submodules/doctor b/docs/submodules/doctor
index 5ffd957..87da3b9 160000 (submodule)
--- a/docs/submodules/doctor
+++ b/docs/submodules/doctor
@@ -1 +1 @@
-Subproject commit 5ffd957a87858e026011e4bbde9b493c62c11b8e
+Subproject commit 87da3b937f3130c49cc84608b49a1556fa3d2728