Update git submodules

Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "Add ODL variables to env file"
  - Add ODL variables to env file

    ODL testcases in functest require new variables:

    https://git.opnfv.org/functest/tree/functest/utils/env.py#n22

    Otherwise the test fails because it cannot contact ODL

    To find those variables, we fetch the ml2_conf.ini file from the neutron
    container and then we parse the values. This is only run when the
    scenario has odl

    deploy-scenario:os-odl-sfc
    installer-type:osa

    Change-Id: If175bb7642e66e151b30e1ccd1b9040aa3481d8f
    Signed-off-by: Manuel Buil <mbuil@suse.com>