Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "create VM via heat"
  - create VM via heat

    JIRA: QTIP-290

    Change-Id: I3b87b06e7f2b134c28d9cb046150fb000070a760
    Signed-off-by: zhihui wu <wu.zhihui1@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 7037806..66901a6 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 70378064802c96afbfde607e95012b7dcd0299ed
+Subproject commit 66901a6c13ab1359161242a967f8d5b8d99ee4cb