t3c add go_direct as a command line arg

[jpappa200]

This adds the ability to control the go_direct directive in parent.config using a command line argument. By default if no argument is supplied go_direct will be set to true on all delivery services and all tiers. If --set-go-direct=false all will be set to false. this is also overridable on a per tier and per delivery service basis using a delivery service profile and a parameter for go_direct_[edge|mid] and also go_direct_[first|inner|last]

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Which Traffic Control components are affected by this PR?

• Traffic Control Cache Config (t3c, formerly ORT)

What is the best way to verify this PR?

Run updated unit tests. also install t3c and run on a test cache with and with out arguments, and with or without override params.

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)

[codecov]

Codecov Report

Merging #7516 (de903b9) into master (2e995e7) will increase coverage by 0.01%.
The diff coverage is 47.50%.

@@             Coverage Diff              @@
##             master    #7516      +/-   ##
============================================
+ Coverage     27.74%   27.75%   +0.01%     
  Complexity       98       98              
============================================
  Files           686      686              
  Lines         78128    78203      +75     
  Branches         90       90              
============================================
+ Hits          21675    21705      +30     
- Misses        54396    54436      +40     
- Partials       2057     2062       +5     

Flag	Coverage Δ
golib_unit	48.59% <66.07%> (+0.03%)	⬆️
grove_unit	4.60% <ø> (ø)
t3c_unit	5.31% <4.16%> (-0.01%)	⬇️
traffic_monitor_unit	21.35% <ø> (ø)
traffic_ops_unit	23.42% <ø> (ø)
traffic_stats_unit	10.14% <ø> (ø)
unit_tests	24.42% <47.50%> (+0.01%)	⬆️

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/torequest/cmd.go	0.00% <0.00%> (ø)
cache-config/t3c-generate/config/config.go	0.83% <0.00%> (-0.06%)	⬇️
cache-config/t3c-generate/cfgfile/wrappers.go	49.45% <50.00%> (+<0.01%)	⬆️
lib/go-atscfg/parentdotconfig.go	65.76% <64.15%> (-0.48%)	⬇️
lib/go-atscfg/parentabstraction.go	80.00% <100.00%> (ø)
lib/go-atscfg/strategiesdotconfig.go	91.86% <100.00%> (+0.07%)	⬆️

... and 1 file with indirect coverage changes

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[traeak]

changes tested and some suggested changes already made.

[ocket8888]

I re-ran the t3c tests; they're failing consistently

[jpappa200]

t3c-git_test.go:70: getting git log: git error: in dir '/opt/trafficserver/etc/trafficserver' returned err exit status 128 msg 'fatal: detected dubious ownership in repository at '/opt/trafficserver/etc/trafficserver'
This is the error, I've rebased again. let's see if that helps.

[traeak]

features manually tested.