Add support for generic dynamic log links

[eapolinario]

Tracking issue

#4773

Why are the changes needed?

We need support for dynamic log links defined by tasks.

What changes were proposed in this pull request?

Add a flag to the propeller config called GenericDynamicLogLinksEnabled, which is self-explanatory. We then use a dynamic log link guard called "Generic" to guide the addition of generic dynamic log links (what I'm calling these log links defined in tasks - a better name could be in order).

How was this patch tested?

Unit tests and local sandbox.

Setup process

Screenshots

Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

Related PRs

Docs link

[codecov]

Codecov Report

Attention: Patch coverage is 81.81818% with 10 lines in your changes are missing coverage. Please review.

Project coverage is 59.01%. Comparing base (44914b1) to head (a038831).
Report is 5 commits behind head on master.

Files	Patch %	Lines
...ugins/go/tasks/pluginmachinery/tasklog/template.go	77.27%	7 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5066      +/-   ##
==========================================
+ Coverage   59.00%   59.01%   +0.01%     
==========================================
  Files         645      645              
  Lines       55578    55622      +44     
==========================================
+ Hits        32792    32826      +34     
- Misses      20194    20201       +7     
- Partials     2592     2595       +3     

Flag	Coverage Δ
unittests	59.01% <81.81%> (+0.01%)	⬆️

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