https://stackoverflow.com/questions/77288081/how-to-pass-environment-variable-into-ansible-template-file

file.yml

######################################
# Step 1: basic fix so it just works #
######################################
# In role
- name: Upload template.text
  become: true
  template:
    src: templates/template.text
    dest: /lib/template.text
  vars:
    VARIABLE_A: {{ PLAYBOOK_VARIABLE_A }}

# In playbook
  - name: Setup Management Server
    hosts: management_server
    roles:
      - ../roles/test-role
    vars:
      PLAYBOOK_VARIABLE_A: test_value

#######################################################
# Step 2: remove backward dep from role               #
# Set that `VARIABLE_A` in your role default/main.yml #
# and override it in playbook to what you wish        #
#######################################################
# In role
- name: Upload template.text
  become: true
  template:
    src: templates/template.text
    dest: /lib/template.text

# In playbook
  - name: Setup Management Server
    hosts: management_server
    roles:
      - ../roles/test-role
    vars:
      VARIABLE_A: test_value
      
#############################################################
# Option: now if you really need that env var for something #
# You don't show in your question, just declare it with the #
# value from the var                                        #
#############################################################
# In playbook
  - name: Setup Management Server
    hosts: management_server
    roles:
      - ../roles/test-role
    vars:
      VARIABLE_A: test_value
    environment:
      AN_ENV_VAR_USED_ON_TARGET: "{{ VARIABLE_A }}"