Update git submodules

* Update docs/submodules/clover from branch 'master'
  - Merge "Update entry_point to conform with Xtesting"
  - Update entry_point to conform with Xtesting

    Functest is being updated to Xtesting 0.60 which leverages on
    stevedore [1].

    [1] https://docs.openstack.org/stevedore/latest/

    Change-Id: I2c162c8e08a580f80b547b3a1cd6cc700d12c858
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/clover b/docs/submodules/clover
index 05873b8..6f0e290 160000 (submodule)
--- a/docs/submodules/clover
+++ b/docs/submodules/clover
@@ -1 +1 @@
-Subproject commit 05873b82e85d913838dc7aed9a21bc99a713a92d
+Subproject commit 6f0e290a318a9e670f43322a0cf977a3e361bf97