Update git submodules

* Update docs/submodules/releng from branch 'master'
  - [compass4nfv] remove vping suite from verify

    functest healthcheck include the vping, so we can remove this suite.

    Change-Id: Ifc5f9e2195a9d31713f6e2c2ce47642dc7855855
    Signed-off-by: wutianwei <wutianwei1@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index c70dfbb..4d3e010 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit c70dfbb4035f18fafbf748216c53906a3b74f2a1
+Subproject commit 4d3e010ba2c7b15bfdc0c1b3af8d1c67dd87ddac