Tests fail against a real cloud because haproxy is not exposed

Because of Amulet bug #1473580, the "expose" configuration from our bundle is not honoured. The end result is that Landscape is deployed but haproxy is firewalled, making all tests that require a connection to the service fail.

Until that bug is fixed and we require the newer amulet, this workaround can be used:

=== modified file 'tests/helpers.py'
--- tests/helpers.py 2015-07-10 07:54:47 +0000
+++ tests/helpers.py 2015-07-10 22:45:14 +0000
@@ -79,6 +79,8 @@
         super(EnvironmentFixture, self).setUp()
         if not self._deployment.deployed:
             self._deployment.load(self._get_bundle())
+ # XXX - amulet bug #1473580, doesn't respect expose from the bundle
+ self._deployment.expose("haproxy")
             repo_dir = self._build_repo_dir()
             try:
                 self._deployment.setup(timeout=self._timeout)

It wouldn't be the first one for amulet in this code:
./tests/helpers.py: # XXX - amulet bug #1473580, doesn't respect expose from the bundle
./tests/helpers.py: XXX Apparently there's no way in Amulet to easily deploy uncommitted
./tests/helpers.py: # XXX: Amulet doesn't support getting binary files, so we