feat(neutron): router flavor shell operator

[haseebsyed12]

creates network profile flavor and flavor

openstack network flavor profile show 1c9f2e28-6069-4a43-a10a-a3dca0b02c37 -f json
{
  "description": "Physical Cisco ASA Stub",
  "driver": "neutron_understack.l3_router.cisco_asa.CiscoAsa",
  "enabled": true,
  "id": "1c9f2e28-6069-4a43-a10a-a3dca0b02c37",
  "meta_info": "{}"
}

openstack network flavor show f9eec0b2-c9ad-4cdb-bfa5-5cc63209d254 -f json
{
  "description": "Physical Cisco ASA Stub",
  "enabled": true,
  "id": "f9eec0b2-c9ad-4cdb-bfa5-5cc63209d254",
  "name": "cisco_asa",
  "service_profile_ids": [
    "1c9f2e28-6069-4a43-a10a-a3dca0b02c37"
  ],
  "service_type": "L3_ROUTER_NAT"
}