gistfile1.txt

   - include: tasks/linux-configure-restart.yaml agent_state=present
####   
- name: Modify rsyslog configuration
  lineinfile:
    dest: '{{ rsyslog.stat.path }}'
    line: 'configline'
    state: '{{ agent_state }}'
  when: rsyslog.stat.exists
  
####

fatal: [x.x.x.x] => One or more undefined variables: 'agent_state' is undefined

# ansible --version
ansible 1.9.4
  configured module search path = None