tests/lcitool/refresh: Treat the output of lcitool as text, not as bytes

In case lcitool fails (e.g. with a python backtrace), this makes
the output  of lcitool much more readable.

Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20240516084059.511463-2-thuth@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
1 file changed