Update git submodules

* Update docs/submodules/clover from branch 'stable/gambia'
  - Modify container tag to opnfv in spark-submit

    - Change tag from local repo to opnfv for clover-spark
    container, which spark-submit references
    - Move update of configured visibility services into
    loop

    Change-Id: I9d09a851977c6006ea2cbba45d7a28be6a4660b9
    Signed-off-by: earrage <eddie.arrage@huawei.com>

diff --git a/docs/submodules/clover b/docs/submodules/clover
index d9bbeea..c2e9cac 160000 (submodule)
--- a/docs/submodules/clover
+++ b/docs/submodules/clover
@@ -1 +1 @@
-Subproject commit d9bbeea6a6a0a37f60580a28c093aed96c033c26
+Subproject commit c2e9caca7e742a89ea66afb8445c0ce1055fd4c2