Track cluster cache taints

[jcogilvie]

Add taint functionality necessary for argoproj/argo-cd#23425

[sonarqubecloud]

Quality Gate passed

Issues
9 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

❌ Patch coverage is 67.04545% with 29 lines in your changes missing coverage. Please review.
✅ Project coverage is 47.27%. Comparing base (8849c3f) to head (9cb3a71).
⚠️ Report is 57 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/cache/cluster.go	67.04%	29 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #772      +/-   ##
==========================================
- Coverage   54.26%   47.27%   -6.99%     
==========================================
  Files          64       64              
  Lines        6164     6629     +465     
==========================================
- Hits         3345     3134     -211     
- Misses       2549     3240     +691     
+ Partials      270      255      -15     

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