Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - bugfix: install the missing package openssh-client

    Change-Id: Ie0889a8e3cd5ae30765353329320aed938749e46
    Signed-off-by: zhihui wu <wu.zhihui1@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 2a91ca1..7f9a898 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 2a91ca171b2c6defe5ce4ec23426d3140e4572cf
+Subproject commit 7f9a8986daa417e05b55c6c9c52719ce1e060b18