Move systemPropertiesOverrideTest to separate source set
          #137492
        
          
      
  Add this suggestion to a batch that can be applied as a single commit.
  This suggestion is invalid because no changes were made to the code.
  Suggestions cannot be applied while the pull request is closed.
  Suggestions cannot be applied while viewing a subset of changes.
  Only one suggestion per line can be applied in a batch.
  Add this suggestion to a batch that can be applied as a single commit.
  Applying suggestions on deleted lines is not supported.
  You must change the existing code in this line in order to create a valid suggestion.
  Outdated suggestions cannot be applied.
  This suggestion has been applied or marked resolved.
  Suggestions cannot be applied from pending reviews.
  Suggestions cannot be applied on multi-line comments.
  Suggestions cannot be applied while the pull request is queued to merge.
  Suggestion cannot be applied right now. Please check back later.
  
    
  
    
Today
:server:systemPropertiesOverrideTestuses the same source set as:server:test, but runs a disjoint set of tests via includes &excludes. This forces every developer to choose in their IDE between the
two tasks when running any unit test in
:servereven though there'sonly one appropriate task to run for any particular test.
This commit moves the serverless-specific unit tests into their own
source set to remove this friction in the development flow.