Responde "cuando variable == verdadero" no se comporta como se esperaba

Tengo las siguientes tareas en un libro de jugadas que estoy escribiendo (resultados enumerados junto a la declaración de depuración en <>):

  - debug: var=nrpe_installed.stat.exists <true>
  - debug: var=force_install <true>
  - debug: var=plugins_installed.stat.exists <true>

  - name: Run the prep 
    include: prep.yml
    when: (nrpe_installed.stat.exists == false or plugins_installed.stat.exists == true or force_install == true)
    tags: ['prep']

  - debug: var=nrpe_installed.stat.exists <true>
  - debug: var=force_install <true>
  - debug: var=force_nrpe_install <false>

  - name: Install NRPE
    include: install-nrpe.yml
    when: (nrpe_installed.stat.exists == false or force_install == true or force_nrpe_install == true)
    tags: ['install_nrpe']
    vars:
      nrpe_url: 'http://url.goes.here'
      nrpe_md5: 3921ddc598312983f604541784b35a50
      nrpe_version: 2.15
      nrpe_artifact: nrpe-{{ nrpe_version }}.tar.gz
      nagios_ip: {{ nagios_ip }}
      config_dir: /home/ansible/config/

Y lo estoy ejecutando con el siguiente comando:

ansible-playbook install.yml -i $invFile --extra-vars="hosts=webservers force_install=True"

El primero incluye ejecuciones, pero el segundo omite con esta salida:

 skipping: [server1] => {"changed": false, "skip_reason": "Conditional check failed", "skipped": true}

Tengo la impresión de que la verificación condicional debería pasar para todos ellos comoforce_install == true evalúa atrue que debería hacer todowhen evaluar a verdadero (ya que es una serie de 'OR').

¿Cómo obtengo el momento de ejecutar cuando las variables se configuran adecuadamente?

Editar:

Cambiar el segundo cuando para elInstall NRPE incluir a los siguientes trabajos, pero no explica por qué el otro,Run the prep corre apropiadamente:

Trabajando:

when: (not nrpe_installed.stat.exists or force_install or force_nrpe_install)

También trabajando:

when: (nrpe_installed.stat.exists == false or plugins_installed.stat.exists == true or force_install == true)

No funciona:

when: (nrpe_installed.stat.exists == false or force_install == true or force_nrpe_install == true)

La salida truncada (duplicados eliminados) de esa sección particular de la obra es:

TASK [debug] *******************************************************************
ok: [server2] => {
    "nrpe_installed.stat.exists": true
}

TASK [debug] *******************************************************************
ok: [server2] => {
    "plugins_installed.stat.exists": true
}

TASK [debug] *******************************************************************
ok: [server2] => {
    "force_install": true
}

TASK [Run the prep] ************************************************************
included: /tasks/nrpe-install/prep.yml for server2, server3, server4, server5, server6, server7

TASK [Prep and configure for installation | Install yum packages] **************
ok: [server6] => (item=[u'gcc', u'glibc', u'glibc-common', u'gd', u'gd-devel', u'make', u'net-snmp', u'openssl-devel', u'unzip', u'tar', u'gzip', u'xinetd']) => {"changed": false, "item": ["gcc", "glibc", "glibc-common", "gd", "gd-devel", "make", "net-snmp", "openssl-devel", "unzip", "tar", "gzip", "xinetd"], "msg": "", "rc": 0, "results": ["gcc-4.1.2-55.el5.x86_64 providing gcc is already installed", "glibc-2.5-123.el5_11.3.i686 providing glibc is already installed", "glibc-common-2.5-123.el5_11.3.x86_64 providing glibc-common is already installed", "gd-2.0.33-9.4.el5_4.2.x86_64 providing gd is already installed", "gd-devel-2.0.33-9.4.el5_4.2.i386 providing gd-devel is already installed", "make-3.81-3.el5.x86_64 providing make is already installed", "net-snmp-5.3.2.2-20.el5.x86_64 providing net-snmp is already installed", "openssl-devel-0.9.8e-40.el5_11.x86_64 providing openssl-devel is already installed", "unzip-5.52-3.el5.x86_64 providing unzip is already installed", "tar-1.15.1-32.el5_8.x86_64 providing tar is already installed", "gzip-1.3.5-13.el5.centos.x86_64 providing gzip is already installed", "xinetd-2.3.14-20.el5_10.x86_64 providing xinetd is already installed"]}

TASK [Prep and configure for installation | Make nagios group] *****************
ok: [server2] => {"changed": false, "gid": 20002, "name": "nagios", "state": "present", "system": false}

TASK [Prep and configure for installation | Make nagios user] ******************
ok: [server6] => {"append": false, "changed": false, "comment": "User for Nagios NRPE", "group": 20002, "home": "/home/nagios", "move_home": false, "name": "nagios", "shell": "/bin/bash", "state": "present", "uid": 20002}

TASK [debug] *******************************************************************
ok: [server2] => {
    "nrpe_installed.stat.exists": true
}

TASK [debug] *******************************************************************
ok: [server2] => {
    "force_install": true
}

TASK [debug] *******************************************************************
ok: [server2] => {
    "force_nrpe_install": false
}

TASK [Install NRPE] ************************************************************
skipping: [server2] => {"changed": false, "skip_reason": "Conditional check failed", "skipped": true}

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