Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Fix permission issue on apex"
  - Fix permission issue on apex

    root privilege is required for ceph commands

    Change-Id: Idf42342d0035359d6bcb475d12ea0808d5d26802
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 7f9a898..e019b66 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 7f9a8986daa417e05b55c6c9c52719ce1e060b18
+Subproject commit e019b668eecbec276999c1399ba673eaa3aad968