unskip test_server_connectivity_cold_migration_revert

looks like test passes on at least default non dvr env
try to unskip it for all envs where supported cold_migration
and resize

Related-prod: PRODX-18236
Change-Id: I31d88d2647c8a782661fe89c7202135e5dd28cf8
diff --git a/tempest/scenario/test_network_advanced_server_ops.py b/tempest/scenario/test_network_advanced_server_ops.py
index b1919d4..bdf990c 100644
--- a/tempest/scenario/test_network_advanced_server_ops.py
+++ b/tempest/scenario/test_network_advanced_server_ops.py
@@ -262,10 +262,10 @@
         self._wait_server_status_and_check_network_connectivity(
             server, keypair, floating_ip)
 
-    @decorators.skip_because(bug='1836595')
     @decorators.idempotent_id('25b188d7-0183-4b1e-a11d-15840c8e2fd6')
-    @testtools.skipUnless(CONF.compute_feature_enabled.cold_migration,
-                          'Cold migration is not available.')
+    @testtools.skipIf(not (CONF.compute_feature_enabled.cold_migration and
+                           CONF.compute_feature_enabled.resize),
+                      'Cold migration/Resize not available.')
     @testtools.skipUnless(CONF.compute.min_compute_nodes > 1,
                           'Less than 2 compute nodes, skipping multinode '
                           'tests.')