Added xfs_mounts datasource and xfs_info spec (#1446)
Added xfs_mounts datasource and xfs_info spec (#1446)

* Added xfs_mounts datasource and xfs_info spec to default.py

* Removed sudo in xfs_info spec from testing

* Line feed formatting issue.

* Removed blank line and if mnt in return statement for datasource.

RedHatInsights/insights-core,RedHatInsights/insights-core