[travis] Fix RSpec formater (for RSpec >= 2.99.x)
[spec] Remove use of deprecated include_class matcher

include_class is deprecated since rspec-puppet 1.0.0.
contain_class should be used instead.
packaging: manage mon and osd in /var/lib/ceph

- Manage /var/lib/ceph/{mon,osd}
- Use stdlib to avoid resource dupplication
- Factorize folders in an array
Merge pull request #50 from enovance/fix-rspec3

Fix spec tests (RSpec 3 formatter and deprecated functions)
Merge pull request #49 from enovance/missing-dir

packaging: manage mon and osd in /var/lib/ceph