Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Add proxy support

    In some cases the XCI development environment can be located behind a
    corporate proxy resulting in a additional layer to consider to
    configure. These changes pretend to include proxy support for all
    linux distros in all the posible flavors.

    Change-Id: Iab469268809ac471d09e244bb3ccd83de1a41b88
    Signed-off-by: Victor Morales <victor.morales@intel.com>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index e47cdad..0d332a8 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit e47cdad33ce29f7db4e0cb72c323ed63504afe16
+Subproject commit 0d332a80cf731e5927c81c9f6929a8b83d43cddd