Fix for minor format issues in [SA-08]

1. Your VIM has an accessible management network (in this case called "<VIM_MGMT_NET>")

2. Your VIM has the appropriate test image, in this case `vyos-1.1.7`.

```

Onboard the descriptors:

These are the steps:

1. Onboard the packages ([refer to OSM's Git repo for packages](https://osm.etsi.org/gitlab/vnf-onboarding/osm-packages)):

   ```bash

   osm vnfpkg-create snmp_ee_vnf

   osm nspkg-create snmp_ee_ns

   ```

Launch the NS:

2. Launch the NS:

   ```bash

   osm ns-create --ns_name snmpee_sa08 --nsd_name snmp_ee-ns --vim_account <VIM_ACCOUNT_NAME>|<VIM_ACCOUNT_ID> --config '{vld: [ {name: mgmtnet, vim-network-name: <VIM_MGMT_NET>} ] }'

   osm ns-list

   ```

Wait ~5 minutes for the SNMP metrics to get collected. After that, check some of them at Prometheus, visiting [`http://[OSM_IP]:9091`](http://[OSM_IP]:9091) and looking for `ifMtu` and `ifInOctets` (you should see one value per VM interface).

Finally, delete the NS and the packages:

3. Wait ~5 minutes for the SNMP metrics to get collected.

4. After that, check some of them at Prometheus, visiting [`http://[OSM_IP]:9091`](http://[OSM_IP]:9091) and looking for `ifMtu` and `ifInOctets` (you should see one value per VM interface).

5. Finally, delete the NS and the packages:

   ```bash

   osm ns-delete snmpee_sa08

   osm nsd-delete snmp_ee-ns

   osm vnfd-delete snmp_ee-vnf

   ```

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