A couple of new roles to requirements.yml

[mhakala]

Can you please add the following. We have found those usable to setup autofs and simple configs for nss.

• src: https://github.com/cmprescott/ansible-role-autofs.git path: roles version: 0.2.0
• src: https://github.com/jtyr/ansible-nsswitch.git path: roles