Reverting partial change from PR 7891.

[rimashah25]

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Which Traffic Control components are affected by this PR?

• Traffic Ops

What is the best way to verify this PR?

Ensure read-only role can perform only GET requests.

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

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)

[zrhoffman]

Thanks! Will approve when test pass.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (3d933d0) 29.09% compared to head (150842b) 32.03%.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #7929      +/-   ##
============================================
+ Coverage     29.09%   32.03%   +2.93%     
  Complexity       98       98              
============================================
  Files           605      722     +117     
  Lines         77535    82912    +5377     
  Branches         90      970     +880     
============================================
+ Hits          22558    26558    +4000     
- Misses        52894    54204    +1310     
- Partials       2083     2150      +67     

Flag	Coverage Δ
golib_unit	53.84% <ø> (ø)
grove_unit	12.02% <ø> (ø)
t3c_unit	5.88% <ø> (ø)
traffic_monitor_unit	25.47% <ø> (ø)
traffic_ops_integration	69.42% <ø> (ø)
traffic_ops_unit	22.08% <100.00%> (-0.01%)	⬇️
traffic_portal_v2	74.39% <ø> (?)
traffic_stats_unit	10.78% <ø> (ø)
unit_tests	29.37% <100.00%> (+3.42%)	⬆️
v3	57.79% <ø> (ø)
v4	79.18% <ø> (ø)
v5	78.58% <ø> (ø)

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