Int test fixes

[aaron-steinfeld]

Description

The new grpc service factory container classes don't rely on environment variables for things like cluster (which were unused, and thus call the direct getConfig(x,y,z) method. This was unsupported for integration tests, so refactored to support both the prior and new styles.

Testing

Verified integration tests both in old service that hasn't been changed for backwards compat, and new service using the new grpc service factory style.

[codecov]

Codecov Report

Merging #42 (a8f90f7) into main (68eddf3) will decrease coverage by 0.49%.
The diff coverage is 0.00%.

@@             Coverage Diff              @@
##               main      #42      +/-   ##
============================================
- Coverage     69.57%   69.08%   -0.50%     
  Complexity      106      106              
============================================
  Files            15       15              
  Lines           562      566       +4     
  Branches         33       33              
============================================
  Hits            391      391              
- Misses          151      155       +4     
  Partials         20       20              

Flag	Coverage Δ
unit	69.08% <0.00%> (-0.50%)	⬇️

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Impacted Files	Coverage Δ
...e/serviceframework/config/ConfigClientFactory.java	0.00% <0.00%> (ø)

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[github-actions]

Unit Test Results

  9 files  ±0    9 suites  ±0   7s ⏱️ ±0s
31 tests ±0  31 ✔️ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit f0f7dcb. ± Comparison against base commit 68eddf3.