Update git submodules

* Update docs/submodules/doctor from branch 'master'
  - Merge "add ssh_keyfile for connect to installer in Apex"
  - add ssh_keyfile for connect to installer in Apex

    Change-Id: I8809a24e75c0260f67d3e128b8bbd1becf924529
    Signed-off-by: dongwenjuan <dong.wenjuan@zte.com.cn>

diff --git a/docs/submodules/doctor b/docs/submodules/doctor
index dcbe7bf..eaeb3c0 160000 (submodule)
--- a/docs/submodules/doctor
+++ b/docs/submodules/doctor
@@ -1 +1 @@
-Subproject commit dcbe7bf1c26052b0e95d209254e7273aa1eaace1
+Subproject commit eaeb3c0f9dc9e6645a159d0a78b9fc181fce53d4