Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "change scenario owner"
  - change scenario owner

    1 bugfix owner must be explicit in ScenarioVersion model
    2 change owner of scenario
    3. usage: PUT /api/v1/scenarios/<scenario_name>/owner? \
                    installer=<installer_name>& \
                    version=<version_name>
      body: new owner

    Change-Id: I261468cd8445030b61e37e0f804b699d6205bdb0
    Signed-off-by: SerenaFeng <feng.xiaowei@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 73ff381..69151dc 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 73ff381c7bb32f13a3d14e96850b84ab37338633
+Subproject commit 69151dce8f4f9bb59c4998fa9e903618265ac0d5