Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "xci: scripts: vm: start-new-vm.sh: Re-arrange debug messages"
  - xci: scripts: vm: start-new-vm.sh: Re-arrange debug messages

    This also improves (again!) the check for parallel packages managers
    to print some useful messages for debugging.

    Change-Id: I7756db80aa3ed42cd3ef37293f7116b5a9c150c1
    Signed-off-by: Markos Chandras <mchandras@suse.de>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index 658d79e..e23de04 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit 658d79e3a47ff254aede2233208945bdb7793ee5
+Subproject commit e23de04492ce301cab4c0f73f70508faf4140477