Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Fix bug in apex module"
  - Fix bug in apex module

    - the default user may not be `root`
    - gather facts is required for getting $HOME

    Change-Id: Ibe7ba31322f07f0a9fa33a01005e605dc7eb796a
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index a1758a3..9956568 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit a1758a360cbc2d59aa0819b78050671b4839e005
+Subproject commit 995656837a0950ccadab7d2b87eded85072ba70e