Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "fix apex integration"
  - fix apex integration

    I didnot find a right way to source Openstack rc file via ansible
    module python api. Without openstack rc fiel, openstack cli command
    can not be executed. So I move this part to ansible playbook.

    Change-Id: I44439560f8ffa1b41890c4e94c9657ab2cc43241
    Signed-off-by: zhihui wu <wu.zhihui1@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 59e48a5..7bc49ce 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 59e48a5df9eb9c10708cd1873f8b5c623bdeb5f2
+Subproject commit 7bc49cecd73a3a88f63828a9219b4aec4d53f70d