Improve bin/swift-account-audit

1.Correct the usage of initializing a Ring object.
2.Fix typo.
3.Align lines of print_status part. (keep origin author mind)

note: Adam Kijak has commited it at early time, but didn't put it
      in Gerrit. I import his commit and send it in right Workflow.

Fixes: bug #1131901

Change-Id: If56316cc424045f7df662d60088382f7fd40e8b1
Merge "Improve bin/swift-account-audit"