Update git submodules

Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Disable cpu pinning & L3 HA features

    * CPU pinning: tests have no support for dedicated CPU policy, so
      enabled pinning causes general performance impact
      [https://docs.openstack.org/nova/pike/admin/cpu-topologies.html]
    * L3 HA routers:
      - doesn't catch l3-agent failure, relies only on
        HA network state to spot failure
      - failover process only retains the state of network
        connections for instances with a floating IP address
      - incompatible with DVR mode

    JIRA: FUEL-360
    Change-Id: Ie0182bf953b9989729f89d705d9fee902d229e51
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>