Revert "Mark "test_live_migration_with_trunk" as unstable"

This reverts commit 14399c08a3fa37d510434d1774826b88af16ceb0

The issue reported has been fixed in the following Neutron patches:
* https://review.opendev.org/c/openstack/neutron/+/888769
* https://review.opendev.org/c/openstack/neutron/+/888776

Depends-On: https://review.opendev.org/c/openstack/neutron/+/888776

Related-Bug: #2027605
Change-Id: I6d7850a73bad3066b5f02dbbefe760ee66591e09
diff --git a/tempest/api/compute/admin/test_live_migration.py b/tempest/api/compute/admin/test_live_migration.py
index a02820a..5384fe1 100644
--- a/tempest/api/compute/admin/test_live_migration.py
+++ b/tempest/api/compute/admin/test_live_migration.py
@@ -258,7 +258,6 @@
         port = self.ports_client.show_port(port_id)['port']
         return port['status'] == 'ACTIVE'
 
-    @decorators.unstable_test(bug='2027605')
     @decorators.attr(type='multinode')
     @decorators.idempotent_id('0022c12e-a482-42b0-be2d-396b5f0cffe3')
     @utils.requires_ext(service='network', extension='trunk')