Support copy files about ansible-role-nginx

[jdauphant]

I have an another role for that : https://github.com/jdauphant/ansible-role-ssl-certs
I will document how to use both when I have time.

[kpx-dev]

@jdauphant I think the general prod use case would be we just upload real cert bought from CA. Then I would think this role just support upload to a place when a specific var is defined. If you are ok with this approach, I'll try to make a patch instead of using 2 roles.

[jdauphant]

@kienpham2000 I see your point. SSL certificat are use in more generic context than nginx, I have prefered to put it in an another role.
I have documented my role, you can take a look: https://github.com/jdauphant/ansible-role-ssl-certs

[kpx-dev]

@jdauphant yea good point. Thanks for the update on other repo, will close this issue.