Update git submodules

* Update docs/submodules/clover from branch 'master'
  - Merge "Initial commit for logging installation and validataion"
  - Initial commit for logging installation and validataion

    - install fluentd with elastic stack
    - validate the installation

    JIRA: CLOVER-5
    Change-Id: I181a7277bc332ceac549d384cf2c3817a182b06e
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/clover b/docs/submodules/clover
index 41be5e0..feb1ff6 160000 (submodule)
--- a/docs/submodules/clover
+++ b/docs/submodules/clover
@@ -1 +1 @@
-Subproject commit 41be5e066a37eb44d7f64372901f8d2760ab4e13
+Subproject commit feb1ff65ed782189612e66b956d0fee6ff1838d6