Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "xci: Wipe repositories at the beginning of the deployment"
  - xci: Wipe repositories at the beginning of the deployment

    We should not wipe the repositories in the localhost playbooks since
    it makes it somewhat hard to debug problems. We should do that at the
    beginning of the deployment to ensure that we start without any stale
    git data.

    Change-Id: I70b2ac77284a9ca304d6aa68dbf1654f59260dc4
    Signed-off-by: Markos Chandras <mchandras@suse.de>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index b11d1cb..0728850 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit b11d1cbd52e5ad34ee2e8c0db23c38286f31abf6
+Subproject commit 07288509b43a9ec418555e60c77ab45c27958822