We bump the Ansible version to the version that Zuul runs. We then set
ansible-lint to the current latest version. This results in a number of
new linter violations which we fix. These violations include:
* Needing to name plays
* Needing to start names with a capital letter
* Using fully qualified names for action modules
* Quoting permissions strings to avoid octal conversion errors
* Using explicit yaml structures for tasks
We also tell ansible-lint to mock zuul_return so that we don't get
errors from it complaining that this module is not defined.
Change-Id: Ic881313fea58f4482f70e493f3d256541d31860a
