Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Add unittests for testapi client"
  - Add unittests for testapi client

    Change-Id: I33ffd6ca6110b5fb245a3fc31fc0c63e11588fb8
    Signed-off-by: akhilbatra898 <akhil.batra@research.iiit.ac.in>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 2781bdb..6dc3c50 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 2781bdb0a4d3802719f4dc6f862bb7e8cfbaed41
+Subproject commit 6dc3c500b3b6fb14b5098259dc57a2d646daaf2c