fix(agent): Log registry error in agent
Merge pull request #560 from bcwaldon/fix-error

fix(agent): Log registry error in agent
Merge pull request #558 from bcwaldon/registry-machine-refactor

Simplify machine-related methods of Registry
refactor(registry): s/GetLatestVersion/LatestVersion/
refactor(registry): s/GetAllJobs/Jobs/
refactor(registry): s/GetJob/Job/
refactor(registry): s/GetJobTarget/JobTarget/
refactor(registry): s/GetJobTargetState/JobTargetState/
refactor(registry): Drop GetSignatureSet from Registry iface
refactor(registry): s/JobSignatureSet/JobSignatureSet/