Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Fix warnings on same name of host and group in Ansible 2.3"
  - Fix warnings on same name of host and group in Ansible 2.3

    Change-Id: Iedf0d609a62b956e1f0cd5e941a8fd27e1abc685
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index d65d96d..973f028 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit d65d96db734fc1b6da094d2df33284452e74a6db
+Subproject commit 973f0287b44b3bcac193bc069bd474fc252232db