all watcher api regression

It's back. It's also inconsistent.

Initially spotted by 'ev', https://bugs.launchpad.net/juju-deployer/+bug/1269519/comments/12

ii juju-deployer 0.3.4-0ubuntu1 Deploy complex stacks of services using Juju
ii python-jujuclie 0.15-0ubuntu1 Python API client for juju
ii juju-core 1.17.3-0ubuntu1 Juju is devops distilled - client

daq-emitter is just an alias for the ganglia sub.

2014-02-25 15:26:17 Config specifies num units for subordinate: daq-emitter
Traceback (most recent call last):
  File "/usr/bin/juju-deployer", line 9, in <module>
    load_entry_point('juju-deployer==0.3.4', 'console_scripts', 'juju-deployer')()
  File "/usr/lib/python2.7/dist-packages/deployer/cli.py", line 127, in main
    run()
  File "/usr/lib/python2.7/dist-packages/deployer/cli.py", line 225, in run
    importer.Importer(env, deployment, options).run()
  File "/usr/lib/python2.7/dist-packages/deployer/action/importer.py", line 196, in run
    self.wait_for_units(ignore_errors=ignore_errors)
  File "/usr/lib/python2.7/dist-packages/deployer/action/importer.py", line 172, in wait_for_units
    services=self.deployment.get_service_names(), on_errors=on_errors)
  File "/usr/lib/python2.7/dist-packages/deployer/env/go.py", line 264, in wait_for_units
    services=services, on_errors=on_errors).run(callback)
  File "/usr/lib/python2.7/dist-packages/jujuclient.py", line 690, in run
    for change_set in self.watch:
  File "/usr/lib/python2.7/dist-packages/jujuclient.py", line 216, in next
    return super(TimeoutWatcher, self).next()
  File "/usr/lib/python2.7/dist-packages/jujuclient.py", line 178, in next
    'Id': self.watcher_id})
  File "/usr/lib/python2.7/dist-packages/jujuclient.py", line 145, in _rpc
    raise EnvError(result)
jujuclient.EnvError: <Env Error - Details:
 { u'Error': u'state watcher was stopped', u'RequestId': 9, u'Response': { }}
 >