os-client-config/os_client_config/vendors/ibmcloud.json

{
  "name": "ibmcloud",
  "profile": {
    "auth": {
      "auth_url": "https://identity.open.softlayer.com"
    },
    "volume_api_version": "2",
    "identity_api_version": "3",
    "regions": [
      "london"
    ]
  }
}