Make use of yes/no booleans in playbooks

At the moment Ansible prefers yes/no for module booleans, however booleans in playbooks are still using True/False, rather than yes/no. This changes modifies boolean uses in playbooks (and man pages) to favor yes/no rather than True/False.

This change includes:

- Adaptation of documentation and examples to favor yes/no
- Modification to manpage output to favor yes/no (the docsite output already favors yes/no)

hacking/templates/man.j2

@@ -21,9 +21,9 @@
 {% if v.get('choices') %}
 
 .IR Choices :
-{% for choice in v.get('choices',[]) %}@{ choice }@{% if not loop.last %},{%else%}.{%endif%}{% endfor %}{% endif %}
+{% for choice in v.get('choices',[]) %}{% if choice == True %}yes{%elif choice == False %}no{% else %}@{ choice }@{% endif %}{% if not loop.last %},{%else%}.{%endif%}{% endfor %}{% endif %}
 {% if v.get('required') %}(required){% endif %}
-{% if v.get('default') %} (default: @{ v.get('default') }@){% endif %}
+{% if v.get('default') %} (default: {% if v.get('default') == True %}yes{%elif v.get('default') == False %}no{% else %}@{ v.get('default') }@){% endif %}{% endif %}
 {#---------------------------------------------- #}
 {% if v.get('version_added') %}
 (Added in Ansible version @{ v.get('version_added') }@.)