Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Use timeout to wrap juju-wait

    It allows getting logs as releng doesn't push them if global timeout.

    Change-Id: I4bbb3818feff37d29b4ccd586f3e940380feef2e
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 6019231..251024b 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 60192314ae2cd6d68925bf6f737701e735f5ae01
+Subproject commit 251024b29199ecee86661b8850751d982b7c5797