Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - xci: scripts: start-new-vm: Mask the pgrep exit code

    pgrep will exit with non-zero exit code if it didn't find a matching
    process. This breaks the script since we set 'errexit' so we need to
    mask it by simply piping it to a 'cat' command.

    Change-Id: I80dcf06b597a769242bd59d628bbd8e09f0f199e
    Signed-off-by: Markos Chandras <mchandras@suse.de>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index e23de04..aba1066 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit e23de04492ce301cab4c0f73f70508faf4140477
+Subproject commit aba10663bdd5af8e1129bae6c01e7fdd09cb1a4e