kolla部署all-in-one的neutron问题?报错

@CloudMAN 你好，想跟你请教个问题：

上个问题，按照您的指导，先不安装cinder或先不创建volume，实例就能创建成功，谢谢。一直在看您的3本《每天5分钟》，感觉讲解通俗、透彻，受益匪浅，希望今后多多出书。

还有个问题，通过kolla部署all-in-one时，当部署到neutron时报错，centos、ubuntu都一样，all-in-one文件没修改，global.yml也没问题，ip a查看已经创建了docker0、ovs-system、br-ex等虚拟设备，不知何故。

TASK [neutron : Setting sysctl values] **********************************************************************************
fatal: [localhost]: FAILED! => {"msg": "The conditional check '(neutron_l3_agent.enabled | bool and neutron_l3_agent.host_in_groups | bool) or (neutron_vpnaas_agent.enabled | bool and  neutron_vpnaas_agent.host_in_groups | bool)' failed. The error was: error while evaluating conditional ((neutron_l3_agent.enabled | bool and neutron_l3_agent.host_in_groups | bool) or (neutron_vpnaas_agent.enabled | bool and  neutron_vpnaas_agent.host_in_groups | bool)): Unable to look up a name or access an attribute in template string ({{ inventory_hostname in groups['neutron-vpnaas-agent'] }}).\nMake sure your variable name does not contain invalid characters like '-': argument of type 'StrictUndefined' is not iterable\n\nThe error appears to have been in '/usr/local/share/kolla-ansible/ansible/roles/neutron/tasks/config.yml': line 2, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n---\n- name: Setting sysctl values\n  ^ here\n"}
    to retry, use: --limit @/usr/local/share/kolla-ansible/ansible/site.retry

PLAY RECAP **************************************************************************************************************
localhost                  : ok=129  changed=0    unreachable=0    failed=1   

Command failed ansible-playbook -i ./all-in-one -e @/etc/kolla/globals.yml -e @/etc/kolla/passwords.yml -e CONFIG_DIR=/etc/kolla  -e action=deploy /usr/local/share/kolla-ansible/ansible/site.yml