Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "run storage test without "-u"."
  - run storage test without "-u".

    https://build.opnfv.org/ci/view/qtip/job/qtip-storage-apex-zte-virtual5-master/13/console

    Change-Id: Id335a2ea36df7553180660bf1f1680354c73266d
    Signed-off-by: zhihui wu <wu.zhihui1@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 31937f7..f798b2a 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 31937f72f6fd0f44d26da673127cded6cc217975
+Subproject commit f798b2aefb73cf8641fa580514c9dc0b8ae7d077