fix for "Zuck::AdAccount is not a parent of Zuck::AdCampaign" for account.ad_campaigns call round 2

This reverts commit bf1824fb53ec875d6dc15fd2aa9277302129201b.
Merge pull request #7 from redhotlabs/AdAccount_AdCampaign_parent

fix for "Zuck::AdAccount is not a parent of Zuck::AdCampaign" for accoun...