Clean up swift-account

whitespace and reference template via relative path
Clean up swift-container

whitespace, relative template path
clean up swift-object role

whitespace and relative template path
clean up swift-proxy

whitespace and relative template path
Clean up swift-ring

Use failed_when to avoid unnecessary red output.
Use success filter in conditionals.
Use ansible controls for sudo.
Whitespace.
Merge pull request #596 from blueboxgroup/cleanup-swift

Cleanup of swift roles.