replace os family container arg with cm flag

[estela-ramirez]

What type of PR is this?

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] Feature/Enhancement (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation update
• [ ] Refactoring (no functional changes)
• [ ] Performance improvement
• [ ] Test updates
• [ ] CI/CD related changes
• [ ] Dependency upgrade

Description

Related issue(s)

High-level overview of changes

Testing performed

Checklist

• [ ] I've read the CONTRIBUTING doc
• [ ] I've added/updated tests that prove my fix is effective or that my feature works
• [ ] I've added necessary documentation (if appropriate)
• [ ] I've run make test locally and all tests pass
• [ ] I've signed-off my commits with git commit -s for DCO verification
• [ ] I've updated any relevant documentation
• [ ] Code follows the style guidelines of this project

Additional information

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 63.33333% with 11 lines in your changes missing coverage. Please review.

Project coverage is 46.57%. Comparing base (8188aaf) to head (fcfa7f1).

Files with missing lines	Patch %	Lines
controllers/reconcilers.go	0.00%	7 Missing :warning:
controllers/provisioners/eks/eks.go	78.94%	2 Missing and 2 partials :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #497      +/-   ##
==========================================
+ Coverage   46.48%   46.57%   +0.08%     
==========================================
  Files          40       40              
  Lines        7075     7094      +19     
==========================================
+ Hits         3289     3304      +15     
- Misses       3627     3632       +5     
+ Partials      159      158       -1     

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