Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Add public key for aaron and qdai

    The keys are used for openvpn connection and ssh access to qtip infra

    Change-Id: Ia56b79babeabbd89003e93463812808b5f3fc4d5
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 37e548e..3be86c4 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 37e548ea8166350d9eab50e512248d32d351862c
+Subproject commit 3be86c4057787ed3e8192d2a07cf6a6db6d9ab4b