Update git submodules

* Update docs/submodules/yardstick from branch 'master'
  - Merge "Acquire NSB specific data from Heat."
  - Acquire NSB specific data from Heat.
    
    First we add mac_address, subnet_cidr to Heat template outputs
    Then we convert those into a form for NSB and add vld_id.
    
    NSB also requires PCI Bus ID, kernel driver
    and dpdk_port_num.  We get this by ssh-ing
    into instance and dumping sysfs
    
    We also need to fix allow for ssh key auth,
    and implement relative path file loading
    so NSB can find all its YAML files
    
    JIRA: YARDSTICK-580
    
    Change history:
    
    don't hide heat create tracebacks we need tracebacks for debug
    
    vnf_generic: add task_path to scenario so we can load relative paths
    
        for vnf_generic we want to be able to load yaml relative to the
        task path
    
        For example:
          traffic_profile: ../../traffic_profiles/fixed.yaml
          topology: ping_tg_topology.yaml  # TODO: look in relative path where the tc.yaml is found
    
        These need to be relative to samples/vnf_samples/nsut/ping/tc_ping_heat_context.yaml
    
        Add a scenario["task_path"] entry
    
    heat: log actual exception
    
    vnf_generic: replace list with set and iterate over values()
    
        some general refactors to remove redundact lookups and
        type conversions
    
    heat: provide mac_address, device_id and network_id from outputs
    
        We may need more information to dynamically
        determine test topology.
    
        Towards this end return more info in the heat template.
        We can return mac_address, device_id and network_id.
    
        Once we have this info we can add it to the context_cfg
        as an interfaces dict.
    
    add sample vnf ping multi-network test
        this test requires 3 network, one for mgmt
        and the other two for NSB traffic tests
        We have to make sure we don't use DPDK
        on mgmt interface because DPDK unbinds
        the driver
    
    heat: convert networks to OrderedDict
    
        so we can lookups networks as well as
        iterate over them in consisitent order
    
    heat: and vld_id to networks for vnf_generic
    
        vnf_generic uses vld_id  Virtual Link Descriptor ID
        to identify interfaces
    
        Add the key to the networks dict
        and store in Networks object
    
    implement relative path file loading in vnf_generic
    
        in multiple places we need to load a file
        relative to the task path, so add
        open_relative_file_path
    
        and modify load_vnf_model to include the scenario_cfg
        parameter so we have access to task_path
    
    DRAFT: heat timeout support
    
        Heat stack in CI job failed due to some Nova issue.
    
        But then apparently yardstick kept running and took 180mins to timeout
    
        https://build.opnfv.org/ci/view/bottlenecks/job/bottlenecks-compass-posca_stress_ping-baremetal-daily-master/16/console
    
        We can add a Heat create timeout and fail faster if there is an error.
    
        The question is how long should we wait for a Heat stack to deploy.  We
        can set a default and allow override in the heat context config, if
        users make complicated stacks
    
    heat: get netmask and gateway from heat outputs
    
        we have do some tricky business with finding
        the subnet cidr and converting it into netmask
    
    vnf_generic: get vpci, driver and dpdk_port_num
    
        use a big old find command to dump all the sysfs
        netdev info nicely.  This was re-used from autotest FCoE tests.
    
        r"""find /sys/devices/pci* -type d -name net -exec sh -c '{ grep -sH ^ \
        +$1/ifindex $1/address $1/operstate $1/device/vendor $1/device/device \
        +$1/device/subsystem_vendor $1/device/subsystem_device ; \
        +printf "%s/driver:" $1 ; basename $(readlink -s $1/device/driver); } \
        +' sh  \{\}/* \;
    
        This finds all PCI devices that are network devices, then
        dumps all the relevant info using /bin/sh.
    
        Then we parse this into a 'netdevs' dict inside the node_dict
        and also convert into VNF fields we need.
    
    vnf_generic: set node name for kpis
    
        node is a dict, so we have to use node_name
    
    vnfdgen:  we CANNOT use TaskTemplate.render
    
        because it does not allow for missing variables, we need to allow
        password for key_filename to be undefined
    
    remove default ssh password hack, once rendering is fixed
    
    add new example tc_external_ping_heat_context
    
    Change-Id: If1fe0c1a2ab0a5be17e40790a66f28f706fa44d6
    Signed-off-by: Ross Brattain <ross.b.brattain@intel.com>
    Signed-off-by: Edward MacGillivray <edward.s.macgillivray@intel.com>
    

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