Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "xci: osa: Do not wipe cinder volumes"
  - xci: osa: Do not wipe cinder volumes

    When a volume is removed, cinder will fill the entire disk with 0s. This
    can slow down the volume removal process. Since we do not care what
    happens with the volume after it's being removed, we don't need to
    wipe it at all.

    Change-Id: I5ef1b01a18cdf2694252b450ca4f1c6a37090f71
Link: https://docs.openstack.org/cinder/latest/sample_config.html
    Signed-off-by: Markos Chandras <mchandras@suse.de>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index a1fbe53..e92f64a 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit a1fbe5304edd9153a4a6cfc9ce10f3666e2b9ea5
+Subproject commit e92f64a24a04b08387af618a9bc398d0315bb7ce