ansible/ansible — pull request #6487 by antlegrand (2014-03-14 10:23:33+00:00)
Title: add with_product for nested loop

I had the need to do nested loop (product):
```
for x in A:
for y in B
(x,y)
```
i.e:
Execute a action over a list and delegate_to all host in a group:
```yaml
- name: My Role | Send configs
template: src="{{item.0}}" dest=/etc/mysoft/conf.d/ mode=0644
delegate_to: "{{item.1}}"
with_product:
- mytemplates
- groups['logstash-indexers']
```