migration: Fix unix socket number issue

QEMU open more connection in postcopy. So update code.

Signed-off-by: lcheng <[email protected]>

libvirt/tests/src/migration/migrate_over_unix.py

@@ -129,7 +129,7 @@ def _check_socket():
             global sockets
             sockets = [x.strip() for x in _res if socket_pattern.match(x)]
             logging.debug("Found sockets: %s", sockets)
-            return len(sockets) == int(exp_num)
+            return len(sockets) >= int(exp_num)
 
         found_expected = utils_misc.wait_for(_check_socket, timeout=30)