install contrail failed if no kolla section existed in instances.yaml

When I use the following instances.yaml to deploy contrail, the following error appears:

TASK [set_contrail_variables : get the internal VIP from internal_vip if haproxy is enabled] ***************************************************************************************************fatal: [localhost]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'dict object' has no attribute 'kolla_internal_vip_address'\n\nThe error appears to have been in '/mnt/c/workspace/contrail-ansible-deployer/playbooks/roles/set_contrail_variables/tasks/main.yml': line 98, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n - always\n- name: get the internal VIP from internal_vip if haproxy is enabled\n ^ here\n"}

PLAY RECAP *************************************************************************************************************************************************************************************localhost : ok=30 changed=1 unreachable=0 failed=1

My instances.yaml

provider_config:
  bms:
    ssh_pwd: blade123
    ssh_user: root
    ntpserver: africa.pool.ntp.org
    domainsuffix: local
instances:
  centos1:
    provider: bms
    ip: &stack_ip 10.240.230.70
    roles:
      openstack:
  centos2:
    provider: bms
    ip: &tf_ip 10.240.230.100
    roles:
      config_database:
      config:
      control:
      analytics_database:
      analytics:
      webui:
  centos3:
    provider: bms
    ip: 10.240.230.80
    roles:
      vrouter:
        PHYSICAL_INTERFACE: enp47s0f1
        VROUTER_GATEWAY: 192.168.10.1
      openstack_compute:
global_configuration:
  CONTAINER_REGISTRY: 10.240.235.32:5000
  REGISTRY_PRIVATE_INSECURE: True
contrail_configuration:
  CONFIG_DTABASE_NODEMGR__DEFAULTS__minimum_diskGB: "2"
  CONFIG_NODEMGR__DEFAULTS__minimum_diskGB: "2"
  DATABASE_NODEMGR__DEFAULTS__minimum_diskGB: "2"
  CONTRAIL_VERSION: newton-dev
  CLOUD_ORCHESTRATOR: openstack
  RABBITMQ_NODE_PORT: 5673
  VROUTER_GATEWAY: 192.168.10.1
  PHYSICAL_INTERFACE: eno2
  CONTROLLER_NODES: *tf_ip
  CONTROL_NODES: 192.168.10.20
  AUTH_MODE: keystone
  KEYSTONE_AUTH_HOST: *stack_ip
  KEYSTONE_AUTH_URL_VERSION: /v3
  KEYSTONE_AUTH_ADMIN_USER: admin
  KEYSTONE_AUTH_ADMIN_PASSWORD: admin