Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - change the test suite for experimental job

    The experimental job is executed on zte-virtual6.
    And zte-virtual6 is deployed by mcp(fuel), storage
    test doesn't support mcp, so I change the test suite
    from "storage" to "compute".

    Change-Id: Id11dcc3344a0d06fdb3be2f058a519d1407736ac
    Signed-off-by: zhihui wu <wu.zhihui1@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index cd43e11..f4b75e4 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit cd43e1188a918cbf94738c08012a21152bd535d2
+Subproject commit f4b75e4a071c5a29268aec9799116e3eef56b920