Add a ceph::client class

That should be used to configure clients without using exported
resources.
travis-ci: update the puppet versions to test
Remove utf-8 characters

Try to avoid issues if default encoding is not utf-8
(See https://tickets.puppetlabs.com/browse/PUP-1386)
Add a warning header in the templates
Remove some white line after docstrings
Merge pull request #71 from enovance/fc/ceph_client

Add a ceph::client class