Add scale out TCs with availability zone support

Add PROX and vFW scale out TCs with availability zone
configuration. To be able to specify the availability
zone for specific VNF or TG the following example of
command line option shoud be used:

  yardstick -d task start --task-args='{
    "num_vnfs": 2, "availability_zone":
     {
      "vnf_0": "az_0", "tg_0": "az_0",
      "vnf_1": "az_1", "tg_1": "az_1",
      ... }}' <SCALE-OUT-TC-FILE>

The steps to run new scale-out TCs is documented in the
userguide.

JIRA: YARDSTICK-1203

Change-Id: Ib3878485c5483981fe9b48ab02995712bcc31ae5
Signed-off-by: Mytnyk, Volodymyr <volodymyrx.mytnyk@intel.com>
(cherry picked from commit 0156b5c37e08f91a37dda08edb854758bbba7413)

1 files changed, 111 insertions, 1 deletions

diff --git a/docs/testing/user/userguide/14-nsb-operation.rst b/docs/testing/user/userguide/14-nsb-operation.rst
index d157914a9..851c6528e 100644
--- a/docs/testing/user/userguide/14-nsb-operation.rst
+++ b/docs/testing/user/userguide/14-nsb-operation.rst
@@ -84,6 +84,116 @@ In this example we have ``TRex xe0 <-> xe0 VNF xe1 <-> xe0 UDP_Replay``
           downlink_0:
            - xe0
 
+
+Availability zone
+^^^^^^^^^^^^^^^^^
+
+The configuration of the availability zone is requred in cases where location
+of exact compute host/group of compute hosts needs to be specified for SampleVNF
+or traffic generator in the heat test case. If this is the case, please follow
+the instructions below.
+
+.. _`Create a host aggregate`:
+
+1. Create a host aggregate in the OpenStack and add the available compute hosts
+   into the aggregate group.
+
+   .. note:: Change the ``<AZ_NAME>`` (availability zone name), ``<AGG_NAME>``
+     (host aggregate name) and ``<HOST>`` (host name of one of the compute) in the
+     commands below.
+
+   .. code-block:: bash
+
+     # create host aggregate
+     openstack aggregate create --zone <AZ_NAME> --property availability_zone=<AZ_NAME> <AGG_NAME>
+     # show available hosts
+     openstack compute service list --service nova-compute
+     # add selected host into the host aggregate
+     openstack aggregate add host <AGG_NAME> <HOST>
+
+2. To specify the OpenStack location (the exact compute host or group of the hosts)
+   of SampleVNF or traffic generator in the heat test case, the ``availability_zone`` server
+   configuration option should be used. For example:
+
+   .. note:: The ``<AZ_NAME>`` (availability zone name) should be changed according
+     to the name used during the host aggregate creation steps above.
+
+   .. code-block:: yaml
+
+     context:
+       name: yardstick
+       image: yardstick-samplevnfs
+       ...
+       servers:
+         vnf__0:
+           ...
+           availability_zone: <AZ_NAME>
+           ...
+         tg__0:
+           ...
+           availability_zone: <AZ_NAME>
+           ...
+       networks:
+         ...
+
+There are two example of SampleVNF scale out test case which use the availability zone
+feature to specify the exact location of scaled VNFs and traffic generators.
+
+Those are:
+
+.. code-block:: console
+
+  <repo>/samples/vnf_samples/nsut/prox/tc_prox_heat_context_l2fwd_multiflow-2-scale-out.yaml
+  <repo>/samples/vnf_samples/nsut/vfw/tc_heat_rfc2544_ipv4_1rule_1flow_64B_trex_scale_out.yaml
+
+.. note:: This section describes the PROX scale-out testcase, but the same
+  procedure is used for the vFW test case.
+
+1. Before running the scale-out test case, make sure the host aggregates are
+   configured in the OpenStack environment. To check this, run the following
+   command:
+
+   .. code-block:: console
+
+     # show configured host aggregates (example)
+     openstack aggregate list
+     +----+------+-------------------+
+     | ID | Name | Availability Zone |
+     +----+------+-------------------+
+     |  4 | agg0 | AZ_NAME_0         |
+     |  5 | agg1 | AZ_NAME_1         |
+     +----+------+-------------------+
+
+2. If no host aggregates are configured, please use `steps above`__ to
+   configure them.
+
+__ `Create a host aggregate`_
+
+
+3. Run the SampleVNF PROX scale-out test case, specifying the availability
+   zone of each VNF and traffic generator as a task arguments.
+
+   .. note:: The ``az_0`` and ``az_1`` should be changed according to the host
+     aggregates created in the OpenStack.
+
+   .. code-block:: console
+
+     yardstick -d task start\
+     <repo>/samples/vnf_samples/nsut/prox/tc_prox_heat_context_l2fwd_multiflow-2-scale-out.yaml\
+       --task-args='{
+         "num_vnfs": 4, "availability_zone": {
+           "vnf_0": "az_0", "tg_0": "az_1",
+           "vnf_1": "az_0", "tg_1": "az_1",
+           "vnf_2": "az_0", "tg_2": "az_1",
+           "vnf_3": "az_0", "tg_3": "az_1"
+         }
+       }'
+
+   ``num_vnfs`` specifies how many VNFs are going to be deployed in the
+   ``heat`` contexts. ``vnf_X`` and ``tg_X`` arguments configure the
+   availability zone where the VNF and traffic generator is going to be deployed.
+
+
 Collectd KPIs
 -------------
 
@@ -242,7 +352,7 @@ Baremetal
        file: /etc/yardstick/nodes/pod.yaml
 
 Scale-Out
---------------------
+---------
 
 VNFs performance data with scale-out helps