side-port the rpcdaemon stuffs

this is a merge/squash of rpedde-rcbops/nova-network@23c491bb961eb5372088db87da6803e8e70031bc
and rpedde-rcbops/nova-network@af83b250f4e2bcc797df9dd839f9a4b76381c729
Merge pull request #95 from rpedde-rcbops/claco-happy-making

Merged automatically by jenkins after successful build test
don't use the lts-raring dkms datapath package for ubuntu
Merge pull request #96 from rackerjoe/master

don't use the lts-raring dkms datapath package for ubuntu