Change yumrepo 'name' to 'descr'

To suppress yum warning: 'Repository 'sensu' is missing name in
configuration, using id'
Add 'name' attribute
Merge pull request #67 from hubspotdevops/master

Change yumrepo attribute 'name' to 'descr' to suppress yum warning
Merge git://github.com/sensu/sensu-puppet