0.14.6

This is a maintenance release for the stable version of ARA.

***
WARNING: Please note that the next major version of ARA, 1.0, will contain
         backwards incompatible changes due to significant refactor work
         involving core back end code as well as the SQL schema.
         Please see this blog post [1] for details.
***

Changelog:
- Unit and integration changes improvements
- Workaround an issue where Ansible could sometimes return a non-boolean
  value for the "ignore_errors" field.

[1]: https://dmsimard.com/2017/11/22/status-update-ara-1.0/