old_contents: import sys
  import mock
  
  charmhelpers = None
  apt_pkg = None
  
  
  def mock_charmhelpers():
      # Mock out charmhelpers so that we can test without it.
      # also stops sideeffects from occuring.
      global charmhelpers
      global apt_pkg
      charmhelpers = mock.MagicMock()
      apt_pkg = mock.MagicMock()
      sys.modules['apt_pkg'] = apt_pkg
      sys.modules['charmhelpers'] = charmhelpers
      sys.modules['charmhelpers.core'] = charmhelpers.core
      sys.modules['charmhelpers.core.hookenv'] = charmhelpers.core.hookenv
      sys.modules['charmhelpers.core.host'] = charmhelpers.core.host
      sys.modules['charmhelpers.core.unitdata'] = charmhelpers.core.unitdata
      sys.modules['charmhelpers.core.templating'] = charmhelpers.core.templating
      sys.modules['charmhelpers.contrib'] = charmhelpers.contrib
      sys.modules['charmhelpers.contrib.openstack'] = (
          charmhelpers.contrib.openstack)
      sys.modules['charmhelpers.contrib.openstack.context'] = (
          charmhelpers.contrib.openstack.context)
      sys.modules['charmhelpers.contrib.openstack.ha'] = (
          charmhelpers.contrib.openstack.ha)
      sys.modules['charmhelpers.contrib.openstack.utils'] = (
          charmhelpers.contrib.openstack.utils)
      sys.modules['charmhelpers.contrib.openstack.templating'] = (
          charmhelpers.contrib.openstack.templating)
      sys.modules['charmhelpers.contrib.network'] = charmhelpers.contrib.network
      sys.modules['charmhelpers.contrib.network.ip'] = (
          charmhelpers.contrib.network.ip)
      sys.modules['charmhelpers.fetch'] = charmhelpers.fetch
      sys.modules['charmhelpers.cli'] = charmhelpers.cli
      sys.modules['charmhelpers.contrib.hahelpers'] = (
          charmhelpers.contrib.hahelpers)
      sys.modules['charmhelpers.contrib.hahelpers.cluster'] = (
          charmhelpers.contrib.hahelpers.cluster)
  
      # mock in the openstack releases so that the tests can run
      charmhelpers.contrib.openstack.utils.OPENSTACK_RELEASES = (
          'diablo',
          'essex',
          'folsom',
          'grizzly',
          'havana',
          'icehouse',
          'juno',
          'kilo',
          'liberty',
          'mitaka',
          'newton',
          'ocata',
          'pike',
          'queens',
          'rocky',
      )
  
new_contents: import sys
  import mock
  
  charmhelpers = None
  apt_pkg = None
  
  
  def mock_charmhelpers():
      # Mock out charmhelpers so that we can test without it.
      # also stops sideeffects from occuring.
      global charmhelpers
      global apt_pkg
      charmhelpers = mock.MagicMock()
      apt_pkg = mock.MagicMock()
      sys.modules['apt_pkg'] = apt_pkg
      sys.modules['charmhelpers'] = charmhelpers
      sys.modules['charmhelpers.core'] = charmhelpers.core
      sys.modules['charmhelpers.core.hookenv'] = charmhelpers.core.hookenv
      sys.modules['charmhelpers.core.host'] = charmhelpers.core.host
      sys.modules['charmhelpers.core.unitdata'] = charmhelpers.core.unitdata
      sys.modules['charmhelpers.core.templating'] = charmhelpers.core.templating
      sys.modules['charmhelpers.contrib'] = charmhelpers.contrib
      sys.modules['charmhelpers.contrib.openstack'] = (
          charmhelpers.contrib.openstack)
      sys.modules['charmhelpers.contrib.openstack.context'] = (
          charmhelpers.contrib.openstack.context)
      sys.modules['charmhelpers.contrib.openstack.ha'] = (
          charmhelpers.contrib.openstack.ha)
      sys.modules['charmhelpers.contrib.openstack.utils'] = (
          charmhelpers.contrib.openstack.utils)
      sys.modules['charmhelpers.contrib.openstack.cert_utils'] = (
          charmhelpers.contrib.openstack.cert_utils)
      sys.modules['charmhelpers.contrib.openstack.templating'] = (
          charmhelpers.contrib.openstack.templating)
      sys.modules['charmhelpers.contrib.network'] = charmhelpers.contrib.network
      sys.modules['charmhelpers.contrib.network.ip'] = (
          charmhelpers.contrib.network.ip)
      sys.modules['charmhelpers.fetch'] = charmhelpers.fetch
      sys.modules['charmhelpers.cli'] = charmhelpers.cli
      sys.modules['charmhelpers.contrib.hahelpers'] = (
          charmhelpers.contrib.hahelpers)
      sys.modules['charmhelpers.contrib.hahelpers.cluster'] = (
          charmhelpers.contrib.hahelpers.cluster)
  
      # mock in the openstack releases so that the tests can run
      charmhelpers.contrib.openstack.utils.OPENSTACK_RELEASES = (
          'diablo',
          'essex',
          'folsom',
          'grizzly',
          'havana',
          'icehouse',
          'juno',
          'kilo',
          'liberty',
          'mitaka',
          'newton',
          'ocata',
          'pike',
          'queens',
          'rocky',
      )
  
subject: Add cert_utils to test mocks