Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Bugfix: command chown failed because LF POD has no jenkins user"
  - Bugfix: command chown failed because LF POD has no jenkins user

    Command change the file owner failed on lf-pod1 and lf-pod2
    with the reason "chown: invalid user: ‘jenkins:jenkins’".

    Make pod.yaml file can be modified by any user.

    Change-Id: I1feb108e95c59c228d2aef55862017e9b80bcb73
    Signed-off-by: xudan <xudan16@huawei.com>