Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "jjb: xci: Use the 'ts' utility to print timestamps on executed steps."
  - jjb: xci: Use the 'ts' utility to print timestamps on executed steps.

    We can use the 'ts' utility to print timestamps on every executed
    command so we can keep track on the duration of each task and the
    job overall.

    Change-Id: I77d5d66c0146f943d805612ca5b47e2eed3ffc41
    Signed-off-by: Markos Chandras <mchandras@suse.de>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 484f164..abae229 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 484f16485ab96a5321d0aecb90c0e9511978589f
+Subproject commit abae229c5a0c436027979418445aaf58cc09807c