Skip test_connectivity_between_vms_after_live_migration with LVM backend

Related-prod: PRODX-41590

Change-Id: I1f4ab76e29af8a7e3f4eec630c3aff3d348a5f8e
(cherry picked from commit 41e72ce8d43f2336dd23036343f67eed75f63123)
(cherry picked from commit 2aac8197acb5ccf51142a897c130be63ef30fbe5)
diff --git a/tempest/scenario/test_network_basic_ops.py b/tempest/scenario/test_network_basic_ops.py
index e40e548..6284917 100644
--- a/tempest/scenario/test_network_basic_ops.py
+++ b/tempest/scenario/test_network_basic_ops.py
@@ -944,6 +944,8 @@
                                        nic=spoof_nic, should_succeed=True)
 
     @decorators.idempotent_id('463caa51-0967-4d6d-8ee9-11db1557c710')
+    @testtools.skipUnless(CONF.compute_feature_enabled.live_migration,
+                          'Live migration is not available.')
     @decorators.attr(type='slow')
     @utils.services('compute', 'network')
     def test_connectivity_between_vms_after_live_migration(self):