feat: add compiler to the namespace template api (cherry-pick #2035)

[gcp-cherry-pick-bot]

Cherry-picked feat: add compiler to the namespace template api (#2035)

Signed-off-by: Charles-Edouard Brétéché charles.edouard@nirmata.com

[codecov]

Codecov Report

Attention: Patch coverage is 54.16667% with 11 lines in your changes missing coverage. Please review.

Project coverage is 67.29%. Comparing base (80afa51) to head (0ebab08).
Report is 1 commits behind head on release-0.2.

Files with missing lines	Patch %	Lines
pkg/runner/processors/test.go	60.00%	3 Missing and 1 partial ⚠️
pkg/runner/processors/tests.go	55.55%	3 Missing and 1 partial ⚠️
pkg/apis/conversion/configuration.go	50.00%	1 Missing ⚠️
pkg/runner/processors/context.go	0.00%	0 Missing and 1 partial ⚠️
pkg/runner/processors/namespace.go	50.00%	1 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##           release-0.2    #2036      +/-   ##
===============================================
- Coverage        67.35%   67.29%   -0.07%     
===============================================
  Files              137      137              
  Lines             6534     6549      +15     
===============================================
+ Hits              4401     4407       +6     
- Misses            1812     1819       +7     
- Partials           321      323       +2     

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