Update git submodules

* Update docs/submodules/clover from branch 'stable/fraser'
  - Merge "Remove unused argument" into stable/fraser
  - Remove unused argument

    `BRANCH` is no longer required since we copy source code from working directory
    instead of remote git repository.

    Change-Id: I44776538a9efbca72e8d165e7790603cdafbe395
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/clover b/docs/submodules/clover
index 21fef12..106c87e 160000 (submodule)
--- a/docs/submodules/clover
+++ b/docs/submodules/clover
@@ -1 +1 @@
-Subproject commit 21fef1217615b6840b039b62bff20bbb0d885c6c
+Subproject commit 106c87ed8b51ee9e202cc831f8d22d3f0c8240a9