convert Playbook-style Ansible to Role-style.

This module is in the Galaxy format now, making it compatible with
existing Ansible setups. I've tested it with a Debian-based setup
and made many redhat/debian modifications. I haven't tested it on
redhat/centos. The Vagrantfile is also broken since the conversion.
make Vagrant provisioning work

thanks to Benno at Ansible.
startup time for go-server is long; give it more time to complete
remove unused agent-services, fix vagrant include
Merge pull request #2 from stansonhealth/master

convert Playbook-style Ansible to Role-style.

Sounds like a plan to me.  

FWIW ansible_pkg_mgr is just a fact of what the default package manager is for the node you're running on.    You'd still use it in a when clause, but you'd not need to check the distro.

Merging this.  Thanks!