Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Enable onos-sfc baremetal daily job

    JIRA:-

    Because Baremetal resource is limit, it will take more than 3 hours
    in each circle. so diable ocl and enable onos-sfc.

    Change-Id: I6a9cfd20324bc5dfa79e6cfc4b5ee3b4e84a3085
    Signed-off-by: chigang <chigang@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 6a9f0ce..c0abac4 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 6a9f0ce6edf92e57282ff7b69fb3d47e75234833
+Subproject commit c0abac499d521a12f3327914e944063297f2ee0e