Remove expired cookie and bad signature cookie errors from error.log

[ericholguin]

Closes: #7134

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Which Traffic Control components are affected by this PR?

• Traffic Ops

What is the best way to verify this PR?

• Build CiaB
• Inspect the cdn-in-a-box_edge_1 contianer
  • create a copy of the current cookie:

cd /var/lib/trafficcontrol-cache-config
cp admin.cookie admin-old.cookie

• You will have to wait an hour as that is when this old cookie will expire
• Once it has expired you will need to first change the TO password that t3c uses so it doesn't simply overwrite the cookie:
  vi /etc/cron.d/traffic_ops_ort-cron
  Change the password to anything else, then go ahead and replace the new cookie with the old:

rm the `admin.cookie` file
cp admin-old.cookie admin.cookie

t3c will run again (runs every minute) If you look at the ort logs: tail -f /var/log/ort.log
You will see:

ERROR: t3c-request.go:68: 2022-10-13T22:47:01.876373173Z: writing data: getting server 'edge' update status: 
getting server update status: getting uncached: getting server update status from Traffic Ops '': 
error requesting Traffic Ops: path 'https://trafficops.infra.ciab.test:443/api/4.1/servers/edge/update_status' 
gave HTTP error 401 Unauthorized - error-level alerts: signature expired - unauthorized, please log in

If you also inspect the cdn-in-a-box_trafficops_1 and check the error.log (tail -f /var/log/traffic_ops/error.log) you will not see that error logged.

PR submission checklist

• This PR has tests
• This PR has documentation
• This PR has a CHANGELOG.md entry
• This PR DOES NOT FIX A SERIOUS SECURITY VULNERABILITY (see the Apache Software Foundation's security guidelines for details)

[shamrickus]

LGTM

• Cleans up "errors" that aren't actually errors