':returns: The name of the distribution installed on the cluster.
:raises SkipTest: If the distribution was not set in environment
variables.'

@property
def distribution(self):

    if (self.raw_distribution is None):
        raise SkipTest('Set    FLOCKER_ACCEPTANCE_DISTRIBUTION    with    the    distribution    that    is    installed    on    the    nodes    of    the    cluster.')
    return self.raw_distribution
