Fix a circular import in Candlepin broker test (#3160)
Fix a circular import in Candlepin broker test (#3160)

One does not simply import from
insights.specs.datasources.candlepin_broker, because it itself imports
from insights.specs.default, which imports back from insights.specs.datasources.candlepin_broker.

Signed-off-by: Štěpán Tomsa <754bda00028c7293c7107948d6b3cdb70e16784b@redhat.com>
RedHatInsights/insights-core,RedHatInsights/insights-core