Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "Redirect virsh output to /dev/null in cleanup script"
  - Redirect virsh output to /dev/null in cleanup script

    deploy-scenario:k8-nosdn-nofeature
    installer-type:kubespray

    Change-Id: I540eb8bad2f35d7029ae8a2148c431f7664fbad0
    Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index bdcba60..287cd66 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit bdcba601506cc3a29c0572c0f66538fe4ba4b05d
+Subproject commit 287cd664fcfb18f7a54ce408856641ed17657f44