Do Not Set CALI_CONFIG if Builtin Caliper

[michaelmckinsey1]

Description

• Benchmarks with built in Caliper configurations do not want to set CALI_CONFIG, e.g. RAJAPerf and [WIP] Mpi-Pingpong Benchmark #726. This change enables the option of adding a tag builtin-caliper, which the Caliper modifier will check for and add the config as other environment variables SPOT_CONFIG and OTHER_CALI_CONFIG, which the application can reference if need be, but won't be used natively by Caliper.

Adding/modifying a benchmark (docs: Adding a Benchmark)

• Update repo/raja-perf/application.py

Adding/modifying core functionality, CI, or documentation:

• Update modifiers/caliper/modifier.py

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 25.00000% with 6 lines in your changes missing coverage. Please review.

Project coverage is 41.32%. Comparing base (8a80b65) to head (5c84b7b).

Files with missing lines	Patch %	Lines
modifiers/caliper/modifier.py	25.00%	6 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #888      +/-   ##
===========================================
- Coverage    41.48%   41.32%   -0.17%     
===========================================
  Files           22       22              
  Lines         1509     1515       +6     
  Branches       213      214       +1     
===========================================
  Hits           626      626              
- Misses         838      844       +6     
  Partials        45       45              

Flag	Coverage Δ
unittests	41.32% <25.00%> (-0.17%)	⬇️

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[michaelmckinsey1]

Is it possible to read the tags from repo/raja-perf/application.py in modifiers/caliper/modifier.py? I want to read the builtin-caliper tag from specific applications. Currently I am writing a file in place of this functionality.