* Fix issue #44

* This should prevent commented versions of the fstab entry

* Extend the IPA bootstrappnig text a bit and use hostnames for the
example.

* set_ipa_pwpolicies.py reads the group_vars/all/vault.yml and expands
the password liftime of all activated users to five years in the future.

This role is not idempotent!
Add 'computer_name's to all host_vars/las*.las.kit.edu
Add and update OS infos in host_vars
Update host names for ipa_users

* Add all users exported from IPA