Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "fix the bug of patch verify"
  - fix the bug of patch verify

    If one patch don't modify the "yml" or "yaml" file,
    the script will exit with 1 at egrep "ya?ml$", then mark build as failure.
    In my opinion, if not modify the "yml" or "yaml" file, the yamllint should be successful.
    So we need mark the result of egrep "ya?ml$" as true, then judge the $YAML_FILES.

    Change-Id: I8abcadc9e4c85935ac7b20cdf54713b9800108ba
    Signed-off-by: wutianwei <wutianwei1@huawei.com>