Comment 0 for bug 1732684

In the periodic task to sync cluster statuses, we catch [1] an exception when the stack doesn't exist.

However the heat client throws an exception because the trust is already deleted.

We need to catch the authentication exception too.

2017-10-26 15:12:56.275 20618 ERROR magnum.common.keystone [req-9997650a-47da-41cc-8211-3afbd9071403 - - - 4cb76a98145b11e793ae92361f002671 -] Keystone API connection failed: no password, trust_id or token found.
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall [req-9997650a-47da-41cc-8211-3afbd9071403 - - - 4cb76a98145b11e793ae92361f002671 -] Fixed interval looping call 'magnum.service.periodic.ClusterUpdateJob.update_status' failed: AuthorizationFailure: reason Keystone API connection failed: no password, trust_id or token found.
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall Traceback (most recent call last):
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall File "/usr/lib/python2.7/site-packages/oslo_service/loopingcall.py", line 137, in _run_loop
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall result = func(*self.args, **self.kw)
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall File "/usr/lib/python2.7/site-packages/magnum/service/periodic.py", line 70, in update_status
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall cdriver.update_cluster_status(self.ctx, self.cluster)
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall File "/usr/lib/python2.7/site-packages/magnum/drivers/heat/driver.py", line 83, in update_cluster_status
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall poller.poll_and_check()
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall File "/usr/lib/python2.7/site-packages/magnum/drivers/heat/driver.py", line 172, in poll_and_check
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall stack = self.openstack_client.heat().stacks.get(
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall File "/usr/lib/python2.7/site-packages/magnum/common/exception.py", line 57, in wrapped
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall return func(*args, **kw)
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall File "/usr/lib/python2.7/site-packages/magnum/common/clients.py", line 93, in heat
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall region_name=region_name)
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall File "/usr/lib/python2.7/site-packages/magnum/common/clients.py", line 44, in url_for
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall return self.keystone().session.get_endpoint(**kwargs)
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall File "/usr/lib/python2.7/site-packages/magnum/common/keystone.py", line 57, in session
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall auth = self._get_auth()
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall File "/usr/lib/python2.7/site-packages/magnum/common/keystone.py", line 97, in _get_auth
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall message='reason %s' % msg)
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall AuthorizationFailure: reason Keystone API connection failed: no password, trust_id or token found.
2017-10-26 15:12:56.275 20618 ERROR oslo.service.loopingcall

[1] http://git.openstack.org/cgit/openstack/magnum/tree/magnum/drivers/heat/driver.py#n187