Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Be quiet while downloading images

    Change-Id: I8848d5bae22a408482d51a84636d230d25ca22be
    Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index f7e288d..3de0837 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit f7e288dec1de77be635c5024729fb97de02641ba
+Subproject commit 3de083716e858bdb5e0f88e237afff9ff1bc37c6