Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "bugfix: E722 do not use bare except"
  - bugfix: E722 do not use bare except

    new added pep8 check: https://build.opnfv.org/ci/job/testapi-verify-master/435/console

    Change-Id: I29c1ffbb534babf55ec2fe675001cc85b9e2e922
    Signed-off-by: SerenaFeng <feng.xiaowei@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 8009054..690b3d6 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 80090542b74e3140c0831386a8433cbb144c6ada
+Subproject commit 690b3d6ea4882a44c0a7fcbfc9076db0debebfdf