Remove check for IN_PROGRESS stack

There is no need to disallow concurrent stack updates with convergence
heat engine, which we have moved to since stable/queens.

Change-Id: I1d3357a0c1401b4d1c4fca3e6925895967c8e97c

tripleoclient/exceptions.py

@@ -53,10 +53,6 @@ class PlanEnvWorkflowError(Base):
     """Plan Environment workflow has failed"""
 
 
-class StackInProgress(Base):
-    """Unable to deploy as the stack is busy"""
-
-
 class RootUserExecution(Base):
     """Command was executed by a root user"""
 

tripleoclient/tests/v1/overcloud_deploy/test_overcloud_deploy.py

@@ -1234,22 +1234,6 @@ class TestDeployOvercloud(fakes.TestDeployOvercloud):
 
         self.assertFalse(mock_deploy_and_wait.called)
 
-    def test_heat_stack_busy(self):
-
-        clients = self.app.client_manager
-        orchestration_client = clients.orchestration
-        mock_stack = fakes.create_tht_stack(stack_status="IN_PROGRESS")
-        orchestration_client.stacks.get.return_value = mock_stack
-
-        arglist = ['--templates', ]
-        verifylist = [
-            ('templates', '/usr/share/openstack-tripleo-heat-templates/'),
-        ]
-        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
-
-        self.assertRaises(exceptions.StackInProgress,
-                          self.cmd.take_action, parsed_args)
-
     @mock.patch('tripleoclient.v1.overcloud_deploy.DeployOvercloud.'
                 '_get_undercloud_host_entry', autospec=True,
                 return_value='192.168.0.1 uc.ctlplane.localhost uc.ctlplane')

tripleoclient/v1/overcloud_deploy.py

@@ -917,11 +917,6 @@ class DeployOvercloud(command.Command):
 
         stack = utils.get_stack(self.orchestration_client, parsed_args.stack)
 
-        if stack and stack.stack_status == 'IN_PROGRESS':
-            raise exceptions.StackInProgress(
-                "Unable to deploy as the stack '{}' status is '{}'".format(
-                    stack.stack_name, stack.stack_status))
-
         self._update_parameters(parsed_args, stack)
 
         stack_create = stack is None