Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "xci: files: Move Ansible installation to a library file"
  - xci: files: Move Ansible installation to a library file

    Installing Ansible is just one of the functions we need during XCI
    deployment, as such move it to a library file which can contain more
    functions in the future.

    Change-Id: I708a4e51b2b1d624d6827a8c99f3719b59227ec0
    Signed-off-by: Markos Chandras <mchandras@suse.de>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index 9578c33..8a1ceda 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit 9578c33b0eef82154f7a5867d5c7661c67a025bc
+Subproject commit 8a1cedaafcf94dbf33757b99f5df741adc205cef