Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "fuel, armband: Temporarily remove pxebr deploy arg"
  - fuel, armband: Temporarily remove pxebr deploy arg

    Fuel and implicitly Armband switched to a newer format for parsing
    the "-B" deploy arg, used to pass bridge(s) information.

    For now, we will default to ",,,", which is equivalent to not
    setting any default value for any of the 4 possible bridges.

    NOTE: Armband overrides this on a per-pod basis, since bridge
    information is POD specific in our lab.

    Change-Id: I3635b0eb6f8233cf99022a97d5642f2e49197e3b
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>