Traffic Stats uses unmaintained logging library

[rawlinp]

I'm submitting a ...

• improvement request (usability, performance, tech debt, etc.)

Traffic Control components affected ...

• Traffic Stats

Current behavior:

Traffic Stats currently uses this logging library which hasn't had a commit since Jan. 30, 2017: https://github.com/cihub/seelog

trafficcontrol/traffic_stats/traffic_stats.go

Line 42 in dfdbfe9

log "github.com/cihub/seelog"

New behavior:

Since all of our other Go components use the in-repo lib/go-log library, it might make sense for TS to use that logging library as well.