Fix up nagios to work properly now that there is no swift-proxy-acct role.
Merge pull request #57 from VictorLowther/pull-req-release-pebbles-master-b33d4f791a3432f0d3d2d4ea58a1c80f9ce6c95e

https://github.com/crowbar/barclamp-nagios/pull/57

Merged by devtool for cloudsleuth