unnecessary fact gathering

[ninjabong]

With the new-style of playbook, - include:ing other sub--playbooks it seems extraneous to run fact checking on every included playbook run (for example myne has 12 - include:s) and instead using gather_facts: False in every playbook except the first one.

Might be worth updating configuration.yml with a comment about why it's disabled to explicate that, but again don't want to start mucking things up until I've heard from @rricard.

[rricard]

gather_facts: False is totally ok to me, we should do that as long as the user doesn't want to deploy on other machines while doing service discovery So, yes we should default it in the example playbook BUT we should let a note saying thatit shouldn't be used in some cases.