Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  - xci: Fix envInject and remove scenario distro support check

    envInject doesn't play well with variable expansion so it is fixed. [1]
    Scenario support check is not necessary for promotion since the
    promotion job is common for all scenarios/distros and check is done
    as part of earlier distro jobs accordingly. [2]
    gsutil upload is also made quiet.

    Fixed version can be seen from [3].

    [1] https://build.opnfv.org/ci/job/xci-merge-promote-virtual-master/2/console
    [2] https://build.opnfv.org/ci/job/xci-merge-promote-virtual-master/4/console
    [3] https://build.opnfv.org/ci/job/xci-merge-promote-virtual-master/5/console

    Change-Id: Ie36394cab631826209dda4cea6daa456aca3c276
    Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>