test/guest-debug: echo QEMU command as well

This helps with debugging.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210108224256.2321-3-alex.bennee@linaro.org>

tests/guest-debug/run-test.py

@@ -53,6 +53,7 @@ if __name__ == '__main__':
         cmd = "%s %s -g %s %s" % (args.qemu, args.qargs, socket_name,
                                   args.binary)
 
+    print("QEMU CMD: %s" % (cmd))
     inferior = subprocess.Popen(shlex.split(cmd))
 
     # Now launch gdb with our test and collect the result