Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "fuel, armband: Remove SALT_MASTER_IP param"
  - fuel, armband: Remove SALT_MASTER_IP param

    Fuel@OPNFV mcpcontrol network (equiv to old admin/PXE net) has been
    configured to use 192.168.10.0/24 during E release cycle.
    However, due to overlapping with Ericsson-pod1 networks, we decided
    to re-use the old CIDR Fuel used before E release (10.20.0.0/24).

    This allows reusing the INSTALLER_IP param instead of recently added
    SALT_MASTER_IP param.

    Current change refactors all usage of SALT_MASTER_IP in favor of old
    INSTALLER_IP, thus reducing complexity and providing a familiar env
    to leagcy Fuel users.

    JIRA: FUEL-285

    Change-Id: I1e89cca08ce4cb9bf3a82a06043c91ee26aa0794
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>