Update git submodules

Update git submodules

* Update docs/submodules/yardstick from branch 'stable/euphrates'
  - Added required ubuntu packages to run IxLoad client

    To fully enable IxLoad, after installing the IXIA client,
    check /opt/ixia/ixload/<ver>/bin/ixloadpython and make sure
    you can run this cmd inside the yardstick container. Usually
    user is required to copy or link /opt/ixia/python/<ver>/bin/ixiapython
    to /usr/bin/ixiapython<ver>.

    Change-Id: I6bc633802ad6c70329581014ec89c75bb7f8d688
    Signed-off-by: Maciej Skrocki <maciej.skrocki@intel.com>
  - pmu mirror creation ansible error fix

      While creating the mirror for pmu event list generation, some of
      the links would fail, throwing error. This fixes that.

    Change-Id: I52e96b1a6eacb5a9611845e815ecff9052df168a
    Signed-off-by: Dhaval Patel <dhaval.r.patel@intel.com>
  - Enable static cgnapt functionality.

    Change-Id: Ie770ca69ebdc66589ed6ca5c25bfc9a75afb8938
    Signed-off-by: Deepak S <deepak.s@linux.intel.com>
  - BugFix: Fix to Load Balancer - Previously Dropped packets was acceptable

    Dropped packets were tolerated. Now no longer tolerated (except 0.01%)

    Change-Id: I69d4f1a84d82e03a091a61419fa05fea13176c1c
    Signed-off-by: Daniel Martin Buckley <daniel.m.buckley@intel.com>
  - validate_non_string_sequence: use six.string_types

    Change-Id: I7248d97a55974091daf20f0fba4b612101a0e4c5
    Signed-off-by: Ross Brattain <ross.b.brattain@intel.com>
  - Disable spoof check on vfs in sriov setup

    Change-Id: I8577231c2e78776cb30f7f7ded353a4fbc585aaa
    Signed-off-by: Deepak S <deepak.s@linux.intel.com>
  - Adding cpu set to enable affinity for given vcpu

    Change-Id: If2e079966939b7faa33d2833d81caad0a3669036
    Signed-off-by: Deepak S <deepak.s@linux.intel.com>
  - Adding sample multi-port ansible script

    - trex
    - ixia
    - ixia correlated

    Change-Id: I7d1414227c27c2bb03454eac94592e07c434f070
    Signed-off-by: Deepak S <deepak.s@linux.intel.com>
  - fix invalid chracters in ansible scripts

    Change-Id: I3d1a491e4c0f0554a861d9bb24fbd0ac94835759
    Signed-off-by: Deepak S <deepak.s@linux.intel.com>
  - Update the traffic profile to support sample multi-port

    Change-Id: Iaf8b3e0aa3855443b0628573a1df98d177f27c76
    Signed-off-by: Deepak S <deepak.s@linux.intel.com>
  - Relocate iniparser to yardstick.network_services.helpers

    Change-Id: I1f457c9c24f2ca84dde61b64f58edaff8952670a
    Signed-off-by: Edward MacGillivray <edward.s.macgillivray@intel.com>
  - BugFix: Fix to negative dropped packets appearing in results.

    As per defect:
       the "VNF packets dropped" time series is negative - negative number of packets dropped
       is not meaningful.

    Solution:
       Return a positive value.

    Change-Id: I358006a691f2d6b5954333b9f7a745aba97ae44f
    Signed-off-by: Daniel Martin Buckley <daniel.m.buckley@intel.com>
  - BugFix: limit the count to supported range in min/max

    In trex, giving count beyond the allowed range causes trex client to
    fail. Check the range and reset the count before starting the traffic

    Change-Id: I58e54f47edb5f249087b8f7178b807ddfb13b03c
    Signed-off-by: Deepak S <deepak.s@linux.intel.com>