tests/qtest/migration: Add negative tests to validate migration QAPIs

Migration QAPI arguments - uri and channels are mutually exhaustive.
Add negative validation tests, one with both arguments present and
one with none present.

Signed-off-by: Het Gala <het.gala@nutanix.com>
Suggested-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Link: https://lore.kernel.org/r/20240312202634.63349-9-het.gala@nutanix.com
Signed-off-by: Peter Xu <peterx@redhat.com>
1 file changed