[templates] Add openstack-vip bosh diff template
templates for aws_ec2 & openstack_vip
Template folders based on CPI name; new schema for deployment file

Required schema/example deployment file for templates:

    ---
    name: NAME
    director_uuid: UUID
    networks: {}
    properties:
      redis:
        resource: medium
        security_group: redis-server
Merge pull request #1 from drnic/templates

Templates for `bosh diff` to quickly create deployment files