TO: Add fields to servers v5 endpoints to indicate update failures

[shamrickus]

This fixes #7674

---

Which Traffic Control components are affected by this PR?

• Documentation
• Traffic Ops

What is the best way to verify this PR?

Ensure the migrations work both ways.
Verify that the documentation looks good and that the new fields are added to the servers servers/{{hostname}}/update_status and servers/{{hostname}}/update . The new fields should also be cdn lock permissible.

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)

[codecov]

Codecov Report

Merging #7750 (71189dd) into master (62bd082) will decrease coverage by 0.03%.
Report is 3 commits behind head on master.
The diff coverage is 26.66%.

@@             Coverage Diff              @@
##             master    #7750      +/-   ##
============================================
- Coverage     31.89%   31.87%   -0.03%     
  Complexity       98       98              
============================================
  Files           712      712              
  Lines         81875    81980     +105     
  Branches        965      965              
============================================
+ Hits          26111    26128      +17     
- Misses        53614    53702      +88     
  Partials       2150     2150              

Flag	Coverage Δ
golib_unit	53.63% <0.00%> (-0.06%)	⬇️
grove_unit	12.02% <ø> (ø)
t3c_unit	5.99% <ø> (ø)
traffic_monitor_unit	26.33% <ø> (ø)
traffic_ops_integration	69.42% <81.81%> (+0.03%)	⬆️
traffic_ops_unit	21.59% <24.77%> (-0.03%)	⬇️
traffic_portal_v2	74.39% <ø> (+0.03%)	⬆️
traffic_stats_unit	10.76% <ø> (ø)
unit_tests	29.17% <21.77%> (-0.03%)	⬇️
v3	57.79% <ø> (ø)
v4	79.18% <ø> (ø)
v5	78.58% <81.81%> (+0.08%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
lib/go-tc/servers.go	40.07% <0.00%> (-0.80%)	⬇️
...fic_ops/traffic_ops_golang/dbhelpers/db_helpers.go	20.49% <0.00%> (-0.22%)	⬇️
traffic_ops/traffic_ops_golang/server/update.go	0.00% <0.00%> (ø)
traffic_ops/traffic_ops_golang/server/servers.go	27.31% <33.33%> (+0.04%)	⬆️
...traffic_ops_golang/server/servers_update_status.go	62.33% <58.97%> (-1.21%)	⬇️
traffic_ops/v5-client/server_update_status.go	84.21% <77.77%> (+2.96%)	⬆️
traffic_ops/v5-client/server.go	67.32% <100.00%> (ø)

... and 3 files with indirect coverage changes

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more