Uses the same fallback for (mitogen_sudo et al) as become_exe (see #1173).
The new `Spec.become_flags()` is not yet explicitly tested. Note that it
returns a string (matching the Ansible option of the same name), whereas
`Spec.sudo_args()` returns a list.
refs #1083
Some ansible_mitogen connection plugins look more like become plugins (e.g.
mitogen_sudo) & use become plugin options. For now there's special handling in
PlayContextSpec._become_option(). Further design/discussion can go in #1173.
Refs #1087.
This reads the become username from the `become_user` attribute of the play
context, to the `"become_user"` option of the loaded become plugin. This has
been supported by vanilla Ansible since Ansible 2.10 (ansible-base 2.10).
To support this I've also switched from using the `play_context.become` (a
bool), to `connection.become` (an instance of the appropriate) become plugin.
New tests have been added, modelled on those for templated connection
parameters (see #1147, #1153, #1159).
See
- 480b106d65
refs #1083
Co-authored-by: mordek <m.pirog@bonasoft.pl>
Alex Willmer