Be explicit with AnsibleModule types
Be explicit with AnsibleModule types

When moving to ansible 2.1.0.0, we'll need to be more explicity about
our AnsibleModule parameters. Ansible now defaults them to strings.

This will ensure groups is a list.

Change-Id: Ic126c200a432277c0ef406d4406f527d6a3c9fa7
Signed-off-by: Paul Belanger <e7139c8e6c4ea75cc1c287ce081b2dc0f3ab39ec@redhat.com>

openstack-infra/ansible-puppet,openstack-infra/ansible-puppet