Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - install setuptools's latest version in container

    See https://build.opnfv.org/ci/view/qtip/job/qtip-docker-build-push-master/398/console

    Change-Id: I4e975e77e3361cfb468cba0c10cecc21c14c2517
    Signed-off-by: zhihui wu <wu.zhihui1@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index c420248..8c1e9c5 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit c420248ac1daed625ab0d05d1a663c877426701a
+Subproject commit 8c1e9c553cc6b4b8b78c31e7f5f48836c0d945e1