Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Enable verify jobs for external scenarios"
  - Enable verify jobs for external scenarios

    This change extracts the scenario that is impacted by the patch
    which triggered the verify jobs and saves the scenario name into
    java properties file. This file will then be used by envInject
    plugin to inject the scenario name into the build environment.

    If the triggering change impacts multiple scenarios, the build
    will result in  failure and the developer will be informed about
    a possible way to rectify the issue.

    Support for generic scenarios will be introduced in subsequent changes.

    Change-Id: I6406299c1352b6e9b8a9297c5441adf03445be33
    Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 9146b17..8996464 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 9146b1745bebcea1ae7c0ce76dc1cdf4f3f25bb2
+Subproject commit 8996464765156349212131d6bfd335329fa34104