Update git submodules

Update git submodules

* Update upstream/fuel from branch 'stable/colorado'
  - Merge "Use odl v1 mechanism driver of L2 scenario" into stable/colorado
  - Use odl v1 mechanism driver of L2 scenario

    ODL Boron + v2 version of networking-odl does not currently support
    assigning security groups to existing VM in L2 scenario. For details
    please look at:

    * https://bugs.opendaylight.org/show_bug.cgi?id=7021
    * https://gerrit.opnfv.org/gerrit/#/c/23637/

    JIRA: FUEL-216

    Change-Id: Ic16bccf248ee4fbf0d97bfcd19f2831f36136521
    Signed-off-by: Michal Skalski <mskalski@mirantis.com>