[PATCH v4 1/3] Acceptance test: adds param 'address' in _get_free_port

[Oksana Vohchana <ovoshcha@redhat.com>]

In the migration test function _get_free_port works only for localhost,
but in the case to use migration through an RDMA we need to get a free port
on the configured network RDMA-interface.
This patch is the start for another migration option

Signed-off-by: Oksana Vohchana <ovoshcha@redhat.com>
---
 tests/acceptance/migration.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/acceptance/migration.py b/tests/acceptance/migration.py
index a8367ca023..e4c39b85a1 100644
--- a/tests/acceptance/migration.py
+++ b/tests/acceptance/migration.py
@@ -52,8 +52,8 @@ class Migration(Test):
         source_vm.qmp('migrate', uri=src_uri)
         self.assert_migration(source_vm, dest_vm)
 
-    def _get_free_port(self):
-        port = network.find_free_port()
+    def _get_free_port(self, address='localhost'):
+        port = network.find_free_port(address=address)
         if port is None:
             self.cancel('Failed to find a free port')
         return port
-- 
2.21.1