To types rfc format

[gbkannan89]

Closes: #7496
Related: #5911

Which Traffic Control components are affected by this PR?

• Documentation
• Traffic Ops

What is the best way to verify this PR?

Make Api calls to types 5.0

Types to Use RFC3339 Format

  --url https://localhost:8443/api/5.0/types


{ 
  "response": [
      {
          "id": 48,
          "lastUpdated": "2018-12-12T20:49:28.111111Z",
          "name": "TC_LOC",
          "description": "Location for Traffic Control Component Servers",
          "useInTable": "cachegroup"
      }
  ]
}

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

• 7.0.1

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 #7575 (a6b4567) into master (2e995e7) will increase coverage by 1.52%.
The diff coverage is 15.75%.

@@             Coverage Diff              @@
##             master    #7575      +/-   ##
============================================
+ Coverage     27.74%   29.27%   +1.52%     
  Complexity       98       98              
============================================
  Files           686      739      +53     
  Lines         78128    81543    +3415     
  Branches         90      907     +817     
============================================
+ Hits          21675    23869    +2194     
- Misses        54396    55634    +1238     
+ Partials       2057     2040      -17     

Flag	Coverage Δ
traffic_ops_integration	78.91% <100.00%> (+9.49%)	⬆️
v3	?
v4	79.18% <ø> (ø)
v5	78.63% <100.00%> (ø)

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

Impacted Files	Coverage Δ
cache-config/t3c-apply/config/config.go	0.00% <0.00%> (ø)
cache-config/t3c-apply/t3c-apply.go	0.00% <0.00%> (ø)
cache-config/t3c-apply/torequest/cmd.go	0.00% <0.00%> (ø)
cache-config/t3c-apply/util/gitutil.go	0.00% <0.00%> (ø)
cache-config/t3c-apply/util/util.go	4.82% <0.00%> (ø)
cache-config/t3c-generate/config/config.go	0.83% <0.00%> (-0.06%)	⬇️
cache-config/t3cutil/t3cutil.go	18.97% <0.00%> (-0.82%)	⬇️
...ental/traffic-portal/src/app/api/server.service.ts	83.49% <ø> (ø)
...al/src/app/api/testing/delivery-service.service.ts	63.00% <ø> (ø)
...affic-portal/src/app/api/testing/server.service.ts	41.25% <0.00%> (ø)
... and 66 more

... and 122 files with indirect coverage changes

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[rimashah25]

You are also missing a changelog entry.

[rimashah25]

LGTM. Tested CRUD functionality locally and all works correctly, including RFC3339 timestamp.

[rimashah25]

Need to fix changelog and then we are good to merge.