Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge changes from topic 'extend-suse-support-id-skip-verify'

    * changes:
      xci: xci-destroy-env.sh: Update virtualbmc path
      xci: create-vm-nodes: Install virtualbmc in the XCI virtualenv
      xci: osa: Drop openSUSE mirror variables

  - xci: xci-destroy-env.sh: Update virtualbmc path

    Bifrost no longer installs on the deployment host so we don't need
    to look into the bifrost venv for a vbmc installation. Moreover, XCI
    uses virtualenv by default, so we should only look there for vbmc.
    Finally, we should clear vbmc config files from previous deployments
    since that could leave artifacts behind.

    Change-Id: I4cd35636a65e1823c9e4ca9a7c5b17d4b103c6a2
    Signed-off-by: Markos Chandras <mchandras@suse.de>
  - xci: create-vm-nodes: Install virtualbmc in the XCI virtualenv

    XCI prepares a virtualenv for us, so we should install virtualbmc
    in it.

    Change-Id: I320d1c7cad9c5c821269b55252cb7ab4f5136f40
    Signed-off-by: Markos Chandras <mchandras@suse.de>
  - xci: osa: Drop openSUSE mirror variables

    we let downloads.opensuse.org redirect us to a good one since
    the hardcoded one does not appear to work anymore. Ansible gets
    upset if we feed it an empty variables file, so we set a couple
    of variables there to make it happy.

    Change-Id: I887522ebc71dd866d544e75beeff47af6111e059
    Signed-off-by: Markos Chandras <mchandras@suse.de>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index 46be526..8d00a12 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit 46be526924d71cf4acc0531e7c0f052fec0bd4f9
+Subproject commit 8d00a12b591028e57037dee8a7d598f8f155d421