kolla-ansible -i all-in-one bootstrap-servers returns - Ensure localhost in /etc/hosts

[Sandra K]

kolla-ansible -i all-in-one bootstrap-servers
...
TASK [baremetal : Ensure localhost in /etc/hosts] ********************************************************************************************************************************************************************************************
fatal: [localhost]: FAILED! => {"msg": "The conditional check 'customize_etc_hosts | bool' failed. The error was: No filter named 'bool' found.\n\nThe error appears to be in '/usr/local/share/kolla-ansible/ansible/roles/baremetal/tasks/pre-install.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: Ensure localhost in /etc/hosts\n ^ here\n"}

***

sudo nano /etc/hosts

127.0.0.1 localhost

# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
# BEGIN ANSIBLE GENERATED HOSTS
10.20.20.10 host001
# END ANSIBLE GENERATED HOSTS

***

sudo nano /usr/local/share/kolla-ansible/ansible/roles/baremetal/tasks/pre-install.yml

---
- name: Ensure localhost in /etc/hosts
  lineinfile:
    dest: /etc/hosts
    regexp: "^127.0.0.1.*"
    line: "127.0.0.1 localhost"
    state: present
  become: True
  when: customize_etc_hosts | bool

I would like to fix that problem. Maybe someone could help with that?