Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Switch to Functest Hunter

    A new var FUNCTEST_VERSION is introduced to jobs to control the
    version to use for Functest.

    Change-Id: Ice7aa9f910db2353ce3d0bef198bef9fa3efe9fd
    Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index 84e736b..dc707ac 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit 84e736bed99882021d5aa74f84ac185bef2bcc89
+Subproject commit dc707acb1e679abae1e0fea8438833dadd3c5d98