Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Remove qemu-kvm duplicate package

    The qemu-kvm package was duplicated for opensuse distro in the
    start-new-vm.sh script. It doesn't affect its functionality but
    reduce the list of additional packages to install.

    Change-Id: Id5f24793295d7ccd9b19b64a07b24a1150a780aa
    Signed-off-by: Victor Morales <victor.morales@intel.com>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index c5d8334..cbb8d07 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit c5d83347c1550efe2e7eb4e114ac2fc0a18f6e6a
+Subproject commit cbb8d07695bd5cbdee9b11d7fc758c846d3c0915