compass doesn't throw an http error code after failing to deploy

The os template didn't exist causing creating cobbler node failure, but compass still returned a 200 code to the request.

2015-01-07 01:16:58.600 | 2015-01-07 01:17:35,076 - client.py - 487 - INFO - add cluster allinone status: 200, resp: {u'flavor': {u'display_name': u'All-In-One', u'name': u'allinone', u'roles': [{u'display_name': u'all in one compute', u'description': u'all in one compute', u'adapter_id': 3, u'role_id': 35, u'flavor_id': 3, u'optional': True, u'id': 35, u'name': u'allinone-compute'}], u'adapter_id': 3, u'template': u'base.tmpl', u'id': 3}, u'os_name': u'CentOS-6.6-x86_64', u'name': u'allinone', u'reinstall_distributed_system': True, u'created_at': u'2015-01-07 01:17:35', u'adapter_id': 3, u'updated_at': u'2015-01-07 01:17:35', u'os_id': 1, u'id': 1, u'adapter_name': u'openstack_icehouse', u'distributed_system_name': u'openstack', u'owner': <email address hidden>', u'distributed_system_installed': False, u'distributed_system_id': 1, u'flavor_name': u'allinone'}

t', 'updated_at'] filters={}
2015-01-07 01:17:36,425 - utils.py - 273 - INFO - wrap dict ClusterHost[1:allinone.allinone] by support_keys=['package_config', 'os_config', 'config_step', 'config_validated', 'networks', 'created_at', 'updated_at'] filters={}
2015-01-07 01:17:37,391 - cobbler.py - 227 - ERROR - Template 'system.tmpl' does not exists!
2015-01-07 01:17:37,391 - util.py - 48 - INFO - redis fails to acquire the lock serialized_action
2015-01-07 01:17:37,391 - util.py - 49 - ERROR - Template 'system.tmpl' does not exists!
Traceback (most recent call last):
  File "/root/.virtualenvs/compass-core/lib/python2.6/site-packages/compass-0.1.0-py2.6.egg/compass/actions/util.py", line 41, in lock
    yield instance_lock
  File "/root/.virtualenvs/compass-core/lib/python2.6/site-packages/compass-0.1.0-py2.6.egg/compass/actions/deploy.py", line 53, in deploy
    deployed_config = deploy_manager.deploy()
  File "/root/.virtualenvs/compass-core/lib/python2.6/site-packages/compass-0.1.0-py2.6.egg/compass/deployment/deploy_manager.py", line 65, in deploy
    deployed_config = self.deploy_os()
  File "/root/.virtualenvs/compass-core/lib/python2.6/site-packages/compass-0.1.0-py2.6.egg/compass/deployment/deploy_manager.py", line 109, in deploy_os
    return self.os_installer.deploy()
  File "/root/.virtualenvs/compass-core/lib/python2.6/site-packages/compass-0.1.0-py2.6.egg/compass/deployment/installers/os_installers/cobbler/cobbler.py", line 140, in deploy
    self.update_host_config_to_cobbler(host_id, hostname, vars_dict)
  File "/root/.virtualenvs/compass-core/lib/python2.6/site-packages/compass-0.1.0-py2.6.egg/compass/deployment/installers/os_installers/cobbler/cobbler.py", line 297, in update_host_config_to_cobbler
    system_config = self._generate_system_config(host_id, host_vars_dict)
  File "/root/.virtualenvs/compass-core/lib/python2.6/site-packages/compass-0.1.0-py2.6.egg/compass/deployment/installers/os_installers/cobbler/cobbler.py", line 228, in _generate_system_config
    raise Exception(err_msg)
Exception: Template 'system.tmpl' does not exists!
2015-01-07 01:17:37,392 - tasks.py - 95 - ERROR - generator didn't stop after throw()
Traceback (most recent call last):
  File "/root/.virtualenvs/compass-core/lib/python2.6/site-packages/compass-0.1.0-py2.6.egg/compass/tasks/tasks.py", line 93, in deploy_cluster
    deploy.deploy(cluster_id, clusterhost_ids, deployer_email)
  File "/root/.virtualenvs/compass-core/lib/python2.6/site-packages/compass-0.1.0-py2.6.egg/compass/actions/deploy.py", line 55, in deploy
    util.ActionHelper.update_state(cluster_id, hosts_id_list, user)
  File "/usr/lib64/python2.6/contextlib.py", line 35, in __exit__
    raise RuntimeError("generator didn't stop after throw()")
RuntimeError: generator didn't stop after throw()
2015-01-07 01:17:37,410 - job.py - 401 - INFO - Task compass.tasks.deploy_cluster[c3e05a4a-daf8-47ca-8628-bc6e739c7126] succeeded in 1.09465752915s: None
2015-01-07 01:18:00,664 - strategy.py - 55 - INFO - Received task: compass.tasks.update_progress[ee7ffc43-9925-4d5a-a47c-1397f6c8cdeb]
2015-01-07 01:18:00,665 - tasks.py - 244 - INFO - update_clusters_progress