Update git submodules

* Update docs/submodules/doctor from branch 'master'
  - [consumer] fix default value for port number

    Port number of consumer should be int instead of str.

    Change-Id: I7f7c7b23ede094d1d3278ef4cd5f971fb57ca2e8
    Signed-off-by: Ryota MIBU <r-mibu@cq.jp.nec.com>

diff --git a/docs/submodules/doctor b/docs/submodules/doctor
index db301ed..2043cee 160000 (submodule)
--- a/docs/submodules/doctor
+++ b/docs/submodules/doctor
@@ -1 +1 @@
-Subproject commit db301edb5a06109628af0b2e3416751615f11153
+Subproject commit 2043ceeb08c1eca849daeb2b3696d385425ba061