Fixed ProfileExportResponse struct to remove undocumented alerts field.

[rimashah25]

Closes: #6797

---

Which Traffic Control components are affected by this PR?

• Traffic Ops

What is the best way to verify this PR?

curl API GET profiles/{id}/export/ and confirm there is no alerts field in the response

Original Response

{
"profile":{"name":"GLOBAL","description":"Global Traffic Ops profile, DO NOT DELETE","cdn":"ALL","type":"UNK_PROFILE"},
"parameters":[{"config_file":"global","name":"tm.instance_name","value":"Traffic Ops CDN"},{"config_file":"global","name":"tm.toolname","value":"Traffic Ops"},{"config_file":"regex_revalidate.config","name":"maxRevalDurationDays","value":"90"}],
"alerts":null
}

Fixed Response

{
"profile":{"name":"GLOBAL","description":"Global Traffic Ops profile, DO NOT DELETE","cdn":"ALL","type":"UNK_PROFILE"},
"parameters":[{"config_file":"global","name":"tm.instance_name","value":"Traffic Ops CDN"},{"config_file":"global","name":"tm.toolname","value":"Traffic Ops"},{"config_file":"regex_revalidate.config","name":"maxRevalDurationDays","value":"90"}]
}

If this is a bugfix, which Traffic Control versions contained the bug?

master

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

All modified and coverable lines are covered by tests ✅

Comparison is base (258bcfc) 67.60% compared to head (e2609bf) 32.03%.

Additional details and impacted files

@@              Coverage Diff              @@
##             master    #7917       +/-   ##
=============================================
- Coverage     67.60%   32.03%   -35.57%     
  Complexity       98       98               
=============================================
  Files           268      722      +454     
  Lines         10288    82913    +72625     
  Branches        970      970               
=============================================
+ Hits           6955    26560    +19605     
- Misses         3061    54203    +51142     
- Partials        272     2150     +1878     

Flag	Coverage Δ
golib_unit	53.85% <ø> (?)
grove_unit	12.02% <ø> (?)
t3c_unit	5.88% <ø> (?)
traffic_monitor_unit	25.47% <ø> (?)
traffic_ops_integration	69.42% <ø> (-9.47%)	⬇️
traffic_ops_unit	22.08% <ø> (?)
traffic_portal_v2	74.39% <ø> (+0.01%)	⬆️
traffic_stats_unit	10.78% <ø> (?)
unit_tests	29.37% <ø> (-45.00%)	⬇️
v3	57.79% <ø> (?)
v4	79.18% <ø> (ø)
v5	78.58% <ø> (ø)

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