Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Add br-vlan-veth to the br-vlan bridge in openSUSE

    br-vlan-eth was created but not added to any bridge, therefore floating ips
    were not working as it was impossible for the OVS in the compute to get the
    ARP messages coming from the gateway of the public network

    Change-Id: Ia0828b7e96359dc10012ac52bf0e5d4f2c5419cb
    Signed-off-by: Manuel Buil <mbuil@suse.com>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index 782379d..04d157c 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit 782379df78dd954b9746b9cfedce2c7f589a43b7
+Subproject commit 04d157cd1535097268da9d9441bcc411da687c85