Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Remove redundant tempest cleanup utility"
  - Remove redundant tempest cleanup utility

    All the resources including the project, user, network,
    images and flavors to enable tempest running, are created
    by snaps-OO, which will definitely clean up those finally.

    Change-Id: Iea3e3f275cc6cfd2cee421fcafef90aaf2e6cf3e
    Signed-off-by: Linda Wang <wangwulin@huawei.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 5605ff3..1df6160 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 5605ff36c726d49cce33c6ca0f68f802645913bf
+Subproject commit 1df61603c6de7880bdd366b979c0a202d3cb8692