Add placement feature test procedure

```

7. SSH into VNF 1  and make sure that the `firsttouch` and `mytouch1` files have been created.

## Automatic Placement Feature (feature 7953)

### [PLA-01] Basic Placement

_Note. The following is a basic test of PLA using a nsd with a single vnf and only two VIMs. It does therefore not capture more elaborate capabilities of the PLA module such as e.g. pinning and vld constraints._

1. Install PLA 

PLA is an optional module, install by adding --pla to install script

```bash

$ ./install.sh <...> --pla`

```

2. Create the VIMs

Create at least two VIM instances

```bash

$ osm vim-create --name <VIM_NAME> --account_type openstack --auth_url <URL> --user <USER> --password <PASSWORD> -- tenant <TENANT> --description "my description"`

```

The list of VIMs should be similar to e.g.:

```

+------------+--------------------------------------+

| vim name   | uuid                                 |

+------------+--------------------------------------+

| OpenStack2 | eb553051-5b6c-4ad6-939b-2ad23bd82e57 |

| OpenStack1 | 576bbe0a-b95d-4ced-a63e-f387f8e6e2ce |

+------------+--------------------------------------+

```

3. Get the descriptors and onboard them

```bash

$ wget http://osm-download.etsi.org/ftp/osm-6.0-six/8th-hackfest/packages/hackfest-basic_vnfd.tar.gz

$ wget http://osm-download.etsi.org/ftp/osm-6.0-six/8th-hackfest/packages/hackfest-basic_nsd.tar.gz

$ osm vnfd-create hackfest-basic_vnfd.tar.gz

$ osm nsd-create hackfest-basic_nsd.tar.gz

```

4. Create the price lists for compute and transport links

Create the price list files vnf_price_list.yaml and pil_price_list.yaml

vnf_price_list.yaml should contain an entry for the vnfd to use, e.g.

```

- vnfd: hackfest-basic_vnfd

  prices:

    - vim_url: http://10.234.12.47:5000/v3

      vim_name: OpenStack1

      price: 5

    - vim_url: http://10.234.12.44:5000/v3

      vim_name: OpenStack2

      price: 10

 ```

Note `vim_url` and `vim_name` corresponding to step 2.

pil_price_list.yaml describes the inter-vim communication links, e.g.

```

pil:

  - pil_description: Link between OpenStack1 and OpenStack2

    pil_price: 5

    pil_latency: 20

    pil_endpoints:

      - OpenStack1

      - OpenStack2

```

Note `pil_endpoints` using VIM names corresponding to step 2.

5. Update the PLA container with price list and inventory file

```bash

$ docker cp vnf_price_list.yaml $(docker ps -qf name=osm_pla):/placement/.

$ docker cp pil_price_list.yaml $(docker ps -qf name=osm_pla):/placement/.

```

6. Instantiate the service using the placement engine

Use the more expensive vim for `--vim_account`.

```bash

$ osm ns-create --ns_name pla_test --nsd_name hackfest-basic_nsd --vim_account OpenStack2 --config '{placement-engine: PLA}'

```

7. Check VNF deployment

The VNF will be deployed to a VIM according to the content of price list.

```bash

$ osm vnf-list

```

```

+--------------------------------------+------+--------------------------------------+------------------+----------------------+--------------------------------------+----------------+

| vnf id                               | name | ns id                                | vnf member index | vnfd name            | vim account id                       | ip address     |

+--------------------------------------+------+--------------------------------------+------------------+----------------------+--------------------------------------+----------------+

| cbacb383-c2e9-4fda-b066-649165e294bc | -    | 54d36395-53cd-4b99-817b-5900f88523da | 1                | hackfest-basic_vnfd  | 576bbe0a-b95d-4ced-a63e-f387f8e6e2ce | 192.168.241.9  |

+--------------------------------------+------+--------------------------------------+------------------+----------------------+--------------------------------------+----------------+

```

In this example the VNF is deployed to OpenStack1 being the cheapest VIM for the vnf