Merge lp://staging/~cjohnston/ubuntu-ci-services-itself/fix-bzr-error into lp://staging/ubuntu-ci-services-itself

Fix bzr error

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ERROR: test_ensure_some_branches_are_not_pinned (__main__.TestUpdate)
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Traceback (most recent call last):
  File "./juju-deployer/test_update.py", line 91, in setUp
    ('add', ('filename', 'f-id', 'file', 'content\n'))])
  File "/tmp/tmp.pjlTcFZxJd/local/lib/python2.7/site-packages/bzr-2.6.0-py2.7-linux-i686.egg/bzrlib/branchbuilder.py", line 259, in build_snapshot
    message_callback=message_callback)
  File "/tmp/tmp.pjlTcFZxJd/local/lib/python2.7/site-packages/bzr-2.6.0-py2.7-linux-i686.egg/bzrlib/branchbuilder.py", line 127, in _do_commit
    **kwargs)
  File "<string>", line 4, in commit_write_locked
  File "/tmp/tmp.pjlTcFZxJd/local/lib/python2.7/site-packages/bzr-2.6.0-py2.7-linux-i686.egg/bzrlib/mutabletree.py", line 211, in commit
    *args, **kwargs)
  File "/tmp/tmp.pjlTcFZxJd/local/lib/python2.7/site-packages/bzr-2.6.0-py2.7-linux-i686.egg/bzrlib/commit.py", line 290, in commit
    lossy=lossy)
  File "/tmp/tmp.pjlTcFZxJd/local/lib/python2.7/site-packages/bzr-2.6.0-py2.7-linux-i686.egg/bzrlib/cleanup.py", line 132, in run
    self.cleanups, self.func, self, *args, **kwargs)
  File "/tmp/tmp.pjlTcFZxJd/local/lib/python2.7/site-packages/bzr-2.6.0-py2.7-linux-i686.egg/bzrlib/cleanup.py", line 166, in _do_with_cleanups
    result = func(*args, **kwargs)
  File "/tmp/tmp.pjlTcFZxJd/local/lib/python2.7/site-packages/bzr-2.6.0-py2.7-linux-i686.egg/bzrlib/commit.py", line 410, in _commit
    rev_id, lossy=lossy)
  File "/tmp/tmp.pjlTcFZxJd/local/lib/python2.7/site-packages/bzr-2.6.0-py2.7-linux-i686.egg/bzrlib/branch.py", line 752, in get_commit_builder
    lossy)
  File "/tmp/tmp.pjlTcFZxJd/local/lib/python2.7/site-packages/bzr-2.6.0-py2.7-linux-i686.egg/bzrlib/vf_repository.py", line 1306, in get_commit_builder
    lossy)
  File "/tmp/tmp.pjlTcFZxJd/local/lib/python2.7/site-packages/bzr-2.6.0-py2.7-linux-i686.egg/bzrlib/repofmt/pack_repo.py", line 110, in __init__
    lossy=lossy)
  File "/tmp/tmp.pjlTcFZxJd/local/lib/python2.7/site-packages/bzr-2.6.0-py2.7-linux-i686.egg/bzrlib/vf_repository.py", line 117, in __init__
    revision_id, lossy)
  File "/tmp/tmp.pjlTcFZxJd/local/lib/python2.7/site-packages/bzr-2.6.0-py2.7-linux-i686.egg/bzrlib/repository.py", line 102, in __init__
    self._committer = self._config_stack.get('email')
  File "/tmp/tmp.pjlTcFZxJd/local/lib/python2.7/site-packages/bzr-2.6.0-py2.7-linux-i686.egg/bzrlib/config.py", line 3738, in get
    value = opt.get_default()
  File "/tmp/tmp.pjlTcFZxJd/local/lib/python2.7/site-packages/bzr-2.6.0-py2.7-linux-i686.egg/bzrlib/config.py", line 2414, in get_default
    value = self.default()
  File "/tmp/tmp.pjlTcFZxJd/local/lib/python2.7/site-packages/bzr-2.6.0-py2.7-linux-i686.egg/bzrlib/config.py", line 1598, in default_email
    raise errors.NoWhoami()
NoWhoami: Unable to determine your name.
Please, set your name with the 'whoami' command.
E.g. bzr whoami "Your Name <email address hidden>"