Tweak tracing

[davidpdrsn]

• Don't import tracing as log, just use tracing
• use tracing_logfmt

Checklist

• [x] I have read the Contributor Guide
• [x] I have read and agree to the Code of Conduct
• [x] I have added a description of my changes and why I'd like them included in the section below

Description of Changes

Changes the tracing output to use logfmt which is easier to query in grafana.