Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Reschedule armband jobs"
  - Reschedule armband jobs

    Removed the master jobs until mcp is functional on arm.
    Rescheduled the danube jobs 8 hours apart.

    Change-Id: I90037a76a50d61c76c13cd68fa5926e1a73e88e6
    Signed-off-by: Cristina Pauna <cristina.pauna@enea.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index e4e6211..8d9872c 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit e4e6211295ae7d1d18b481731fca188a1d1fd2af
+Subproject commit 8d9872ca78b2352b30c38c763d5e0c4eed3b4522