The PR containers/podman#6442 enables a new way to create
shell completions scripts. The shell completion is handled
by cobra and since the build flags are defined here
the completion functions for this should be defined here
as well. For Reference see:
https://github.com/spf13/cobra/blob/master/shell_completions.md
I added a unit test to ensure that the flags have a
completion function set.
These completions could also be used by buildah if someone
wants to implements this cobra completion logic for buildah.
Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
Paul Holzinger