Replaced by full_path:
https://mesonbuild.com/Reference-manual_returned_external_program.html#external_programpath
ExternalProgram.full_path was added in meson 0.55 but we support meson
>= 0.51. Because of that, use path or full_path conditionally depending
on the meson version.
This gets rid of the following deprecation warning:
NOTICE: Future-deprecated features used:
* 0.48.0: {'module python3'}
* 0.55.0: {'ExternalProgram.path'}
The mock service is more widely useful -- in particular for testing
nm-cloud-setup in a following commit.
Split the commonly useful parts into TestNmClient class.
This will allow to find some memory leaks and memory corruptions.
The bulk of the nmcli calls are still not hooked up with valgrind.
Since we call nmcli a thousand time, we could not just run valgrind with
all of them. We would have instead to enable it randomly. This is
more work.
(cherry picked from commit debf78dbed)
