[asset] created sensu_asset resource, sensu_plugin uses it
[asset] allow sensu_plugin to specify an asset_directory
[asset] do not need to select and send name attribute, no if condition
[asset] created a test suite for sensu_plugin/sensu_asset, found asset_directory bug
Merge pull request #253 from portertech/asset

sensu_asset LWRP, sensu_plugin uses it