Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Increase Functest jjob timeouts"
  - Increase Functest jjob timeouts

    Functest has multiplied the testcases and integrates several ones
    which are growing (e.g. snaps).

    4 hours is reached if snaps or one vnf testcase fails (20 minutes).

    https://build.opnfv.org/ci/view/functest/job/functest-compass-baremetal-daily-master/1695/console

    Change-Id: I5e8b744d35b5253f6e7ac1310286ae374de1943b
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 03da404..348cc40 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 03da40461d6898a208868812e816acfeb9db23f8
+Subproject commit 348cc4049e931e8b72d56419562c7bead72121a1