Fix LB set in ERROR too early in MapLoadbalancerToAmphora

This is a follow up patch for I48b0f5a773209b1c1b056d71c0da05d6fd82ca73,
this fix applies only on Wallaby and older releases because the code was
removed during the Xena cycle.

It removes calls to mark_loadbalancer_prov_status_error in revert method
of tasks (except in LoadBalancer*ToErrorOnRevertTask)

Story 2009651
Task 43810
Story 2009652
Task 43811

Conflicts:
	octavia/tests/unit/controller/worker/v1/tasks/test_database_tasks.py
	octavia/tests/unit/controller/worker/v2/tasks/test_database_tasks.py

Change-Id: I7692155fb113442b692267ab12b69ab90200bcb5
(cherry picked from commit 9b7791db52)
(cherry picked from commit de20868ab7)
(cherry picked from commit 0d25fe5fff)

octavia/controller/worker/v1/tasks/database_tasks.py

@@ -545,11 +545,6 @@ class MapLoadbalancerToAmphora(BaseDatabaseTask):
 
         return amp.id
 
-    def revert(self, result, loadbalancer_id, *args, **kwargs):
-        LOG.warning("Reverting Amphora allocation for the load "
-                    "balancer %s in the database.", loadbalancer_id)
-        self.task_utils.mark_loadbalancer_prov_status_error(loadbalancer_id)
-
 
 class _MarkAmphoraRoleAndPriorityInDB(BaseDatabaseTask):
     """Alter the amphora role and priority in DB."""

octavia/tests/unit/controller/worker/v1/tasks/test_database_tasks.py

@@ -573,22 +573,6 @@ class TestDatabaseTasks(base.TestCase):
 
         self.assertIsNone(amp_id)
 
-        # Test revert
-        map_lb_to_amp.revert(None, self.loadbalancer_mock.id)
-        repo.LoadBalancerRepository.update.assert_called_once_with(
-            'TEST',
-            id=LB_ID,
-            provisioning_status=constants.ERROR)
-
-        # Test revert with exception
-        repo.LoadBalancerRepository.update.reset_mock()
-        mock_loadbalancer_repo_update.side_effect = Exception('fail')
-        map_lb_to_amp.revert(None, self.loadbalancer_mock.id)
-        repo.LoadBalancerRepository.update.assert_called_once_with(
-            'TEST',
-            id=LB_ID,
-            provisioning_status=constants.ERROR)
-
     @mock.patch('octavia.db.repositories.AmphoraRepository.get',
                 return_value=_amphora_mock)
     @mock.patch('octavia.db.repositories.LoadBalancerRepository.get',